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Translation & Localization

SimpleLocalize

EU-Made Report an error

Panel rating · 6 judges · How to read the stars

Category median

Sovereignty: not determined

0–5 in half steps. 5 means the rubric's top anchor is met on the evidence.

by Jakub Pomykała Software · simplelocalize.io

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SimpleLocalize: AI-assisted analysis on whats-best.ai SimpleLocalize: AI-assisted analysis on whats-best.ai (dark)

Add ?theme=dark to the image address for dark backgrounds. The badge shows the category and the month of the latest evaluation, and EU-Made where that is the product’s provenance. It never shows a score.

SimpleLocalize at a glance

Vendor
Jakub Pomykała Software
Headquarters
Not stated on the vendor’s pages as of 1 Nov 2026
Data hosting
Not stated on the vendor’s pages as of 1 Nov 2026
Free plan
Yes, per the vendor’s own page source, captured 1 Nov 2026
Panel verdict
The AI panel rates SimpleLocalize 3.5/5, the mean of 6 judges. SimpleLocalize, a translation-management service from Jakub Pomykała Software, a sole proprietorship in Wrocław, Poland, scored strongest on integrations and formats (7 to 9): a native CLI, a GitHub App that opens pull requests, over-the-air SDKs for Android, iOS and macOS, a REST API with an OpenAPI spec and thirty-plus file formats are documented. how scores are made
As of
Vendor pages captured 1 Nov 2026; evaluated by the panel 2 Nov 2026. all sources

SimpleLocalize alternatives, European ones first →

Read this page as one judge. Each weighs the same scores by what they care about.

The Localization Manager

Weighted verdict

Runs localization for a Hamburg software company whose product, help centre and marketing site ship in fourteen languages, with two agencies and a pool of freelancers. Every release brings a few thousand new strings and a deadline. Wants one translation memory and termbase across all content, machine translation that respects the glossary, review steps per language, QA checks that stop a broken placeholder before it ships, and cost and progress per vendor in one view.

Same scores as the panel view — this lens weights them the way this judge cares.

Scored by The Localization Manager

Panel median The Localization Manager This judge’s scores over the panel median. Each label opens its reasoning below.
Scores per criterion, in stars out of 5
Criterion Panel median The Localization Manager
Machine translation & AI quality 3 of 5 3.5 of 5
Translation memory, terminology & review workflow 3.5 of 5 3.5 of 5
Integrations, file formats & developer tools 4 of 5 4 of 5
Confidentiality of translated content 3 of 5 3 of 5
Data export, portability & self-hosting 2.5 of 5 2 of 5
European sovereignty 3.5 of 5 3.5 of 5
Pricing transparency 3.5 of 5 3.5 of 5

Machine translation & AI quality

How this is scored

What the machine translation does and how well it is controlled: the languages and language pairs covered, the engine (own neural or LLM model, or a choice of third-party engines such as DeepL, Google, Microsoft or an LLM), glossaries and formality applied during translation, document translation that keeps the layout (Word, PowerPoint, PDF, InDesign), custom or adaptive models trained on the customer's own translations, automatic quality estimation or scoring, and published evaluations of translation quality.

0 — No machine translation of any kind, and no way to connect an engine.

3 — Machine translation is offered or one engine can be connected; languages, glossary use and quality controls are basic or not described.

5 — Machine translation for the major European and world languages with the list published, glossaries applied during translation, a formality or tone setting, document translation that keeps formatting for common office formats, and either an own engine or a choice of several named engines.

8 — Custom or adaptive models that learn from the customer's translation memory or corrections, automatic quality estimation per segment with a threshold that routes weak segments to human review, LLM-based translation with style guides and context, engine selection per language pair stated, and a published quality evaluation with its method.

10 — Translation quality that an organisation can measure and steer: evaluations against named benchmarks or blind human review published with their method, quality estimation calibrated and explained, custom models with their training data and isolation documented, and every machine-translated segment traceable to the engine, model version and glossary that produced it.

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The Localization Manager

Auto-translation runs through a genuine choice of named engines — DeepL, Google Translate, OpenAI, Anthropic, Gemini, OpenRouter, a custom endpoint, or a local model via Ollama — with DeepL glossaries applied, tone and per-language prompts, excluded words and variable protection, and 100% translation memory matches applied before any engine is called. What keeps it below the top is that we found no public information on automatic quality estimation per segment, adaptive models that learn from our own corrections, or any published quality evaluation; document translation that keeps Word or InDesign layout is also not documented. 3 11 6 14 12

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Translation memory, terminology & review workflow

How this is scored

How translation is managed as an ongoing process: translation memory with fuzzy matches, a termbase or glossary managed centrally, style guides, review and approval stages, automated QA checks (placeholders, tags, length, terminology, punctuation), an in-context or visual editor, screenshots and context for translators, tasks and deadlines, roles per language, and ordering or inviting human translators and agencies inside the product.

0 — No management of translations at all; text goes in and comes out with nothing stored or reviewed.

3 — Translations can be edited or a glossary kept; translation memory, review stages and QA checks are basic or not described.

5 — A translation memory reused across projects, a central glossary, at least one review or approval stage, automated QA checks for placeholders and terminology, comments and screenshots for context, and roles that limit translators to their languages.

8 — Configurable multi-step workflows with automation rules, an in-context or visual editor for apps or websites, QA checks configurable per project with blocking rules, style guides applied by the AI, translation memory and termbase shared across projects with penalties and priorities, vendor or agency management with ordering inside the product, and progress and cost reporting per language.

10 — A translation process an enterprise runs on: workflows per content type with conditional routing on quality scores, linguistic quality assessment with a named framework (MQM or similar), termbase with approval workflow and forbidden terms, full revision history per segment, and productivity and quality metrics per translator and vendor.

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The Localization Manager

There is a translation memory reused across projects with TMX import, perfect-match review and relevance-scored suggestions applied before machine translation, a glossary, a four-stage workflow with review status filters, automated QA checks for placeholders, HTML, ICU syntax and length that can block publishing, an in-context editor, tasks, and language-level routing of critical languages to human reviewers. For a shop like mine the gaps hurt: we found no public information on ordering from translators or agencies inside the product, cost or progress reporting per vendor or language, managed style guides, or QA rules configurable per project. 13 14 5 3 11 6

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Integrations, file formats & developer tools

How this is scored

How content gets in and out: the file formats supported (XLIFF, PO, JSON, YAML, Android XML, iOS strings and xcstrings, Office documents, InDesign), a REST API and CLI, SDKs and over-the-air updates for apps, Git repository sync (GitHub, GitLab, Bitbucket) and CI pipelines, connectors for CMS, shop and design tools (WordPress, Contentful, Shopify, Figma), browser and office add-ins, webhooks, and a JavaScript snippet or proxy for website translation.

0 — No documented way to get content in or out except typing or pasting by hand.

3 — File upload and download or a basic API; formats, repository sync and connectors are basic or not described.

5 — A documented REST API, a list of supported file formats covering the common software and document formats, sync with at least one Git host or CI, and connectors or plugins for several named CMS, shop or design tools.

8 — A CLI and SDKs for named platforms, over-the-air updates for mobile or web apps, Git sync with branching, webhooks, connectors for the main CMS, shop, design and support tools, office or browser add-ins, a public status page, and API limits documented.

10 — Integration that scales across an organisation: an API covering every function of the product with versioning and SDKs, an app or connector framework third parties build on, continuous localization in CI with pull requests opened automatically, and every connector documented with its limits and the fields it syncs.

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The Localization Manager

The pipe work is genuinely good: thirty-plus file formats including XLIFF 1.2 and 2.0, Excel, Android and iOS variants; a CLI for Windows, macOS and Linux; CI recipes for GitHub Actions, GitLab, Bitbucket, Jenkins and more; a GitHub App that uploads on push and opens pull requests with translation updates; webhooks; Figma, Shopify, Webflow, Slack and Zapier connectors; VS Code, IntelliJ and browser extensions; an MCP server; over-the-air SDKs for Android, iOS and macOS; a service status page; and an OpenAPI spec. We found no public information on documented API limits or a connector framework third parties could build on. 15 16 18 6 2 5

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Confidentiality of translated content

How this is scored

What happens to the text a customer translates: whether source and target texts are stored and for how long, deletion after translation, whether customer content is used to train the vendor's or a third party's models, which machine translation and LLM providers a TMS sends text to and whether that can be restricted or switched off, encryption in transit and at rest, single sign-on, roles and audit logs, and certifications (ISO 27001, SOC 2) with their scope. Where the text is processed is scored under sovereignty.

0 — Customer texts are stored indefinitely and used for the vendor's own purposes, or no statement on data handling exists at all.

3 — The product is described as secure or GDPR-compliant and a privacy policy exists; retention of translated texts, model training and third-party engines are basic or not described.

5 — A documented statement that customer texts are not used to train models, retention or deletion of translated texts stated, the third-party engines or LLM providers named, encryption in transit and at rest, single sign-on on a business tier, and a data processing agreement offered.

8 — Texts deleted immediately after translation or after a retention period the customer sets, third-party AI processing switchable per project or account, zero-retention terms with the named LLM providers, audit logs, granular roles, ISO 27001 or SOC 2 certification stated with its scope, and a private or dedicated deployment option.

10 — Confidentiality that can be verified: an on-premise or customer-controlled deployment, customer-managed encryption keys, every subprocessor that sees content listed with its role, independent audit reports available, and every data flow of a translation request documented end to end.

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The Localization Manager

Customer data sits exclusively in AWS EU regions and never leaves the EU unless the customer enables optional machine translation or AI; the AI providers are named in a subprocessor list and are opt-in; a public DPA is accepted by use; deletion happens within 30 days on active systems and 180 in backups; SSO with SCIM is on the Business tier and access to production is logged and audited. We found no public information on whether translated texts are used for model training, zero-retention terms with the LLM providers, or encryption at rest for live data; the ISO 27001 and SOC 2 certificates cited belong to the hosting infrastructure, with only SOC 2 readiness claimed for the vendor itself. 9 8 10 17 11

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Data export, portability & self-hosting

How this is scored

Whether translation assets stay the customer's and can leave with them: export of translation memory and termbase in open formats (TMX, TBX, XLIFF, CSV), export of all projects and files, import from another TMS, an API that can read every asset, the return or deletion of data on termination, open-source code and a self-hosted or on-premise edition.

0 — Translations cannot be exported; they exist only in the vendor's interface or engine.

3 — Translated files can be downloaded; export of translation memory and glossary, import and termination terms are basic or not described.

5 — Translation memory exportable as TMX and glossary as TBX or CSV, all project files downloadable, import of translation memory and glossaries from another tool, and an API that reads translations and keys.

8 — Complete export of every asset (memory, termbase, files, comments, history) in open formats, a documented migration path from named competitors, the data returned or deleted on termination under stated terms, and a self-hosted or on-premise edition with its own documentation.

10 — The customer owns the assets end to end: open-source code under a named licence that runs fully self-hosted with feature parity stated, a complete export another tool can import without loss, and the deletion of every copy on termination documented.

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The Localization Manager

Translations can be exported through the editor, CLI and API in many formats including XLIFF, JSON variants and Excel, translation memories can be imported from TMX, the customer is stated to own the data, and export is available before deletion on request. We found no public information on exporting the translation memory or glossary in TMX or TBX, exporting comments and history, a documented migration path from another TMS, or a self-hosted edition. 14 19 18 15 9

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European sovereignty

How this is scored

Who the contracting entity and the parent company are, where texts are translated, stored and processed, and who the subprocessors are (hosting, machine translation engines, LLM providers, CDN for over-the-air delivery, support and payment tools). Independently sourced by the sovereignty pipeline; translated texts often hold personal data and trade secrets, so the whole chain counts, including the engines a TMS calls. A self-hosted edition the customer runs on its own European servers counts as the customer's chain, whatever the vendor's seat.

0 — Non-EU vendor and contracting entity, hosting unstated, subprocessors unnamed, and no data processing agreement offered.

3 — A privacy policy and a data processing agreement exist, but hosting location is unstated or non-EU and the subprocessors are not listed.

5 — EU hosting available and an EU contracting entity or EU representative, but parts of the chain (machine translation or LLM providers, CDN, support, payment) run through non-EU providers without a stated safeguard.

8 — EU hosting on named infrastructure, EU contracting entity, subprocessors listed with their locations including the engines and LLM providers, a data processing agreement published, and security certifications (ISO 27001, SOC 2) stated — or a self-hosted edition documented that keeps every text on the customer's own servers.

10 — Sovereign end to end and evidenced: European ownership, entity, hosting, engine and every subprocessor, or a self-hosted open-source edition with no call home, data export and deletion documented, and certifications published with their scope rather than implied.

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The Localization Manager

The contracting entity is a Polish sole proprietorship in Wrocław with a registration number, hosting is exclusively AWS EU regions with encrypted backups in geographically redundant EU locations, the DPA is published, and a subprocessor list names the machine translation engines and AI providers with their purposes. Locations are stated only for AWS Ireland, Hetzner Germany and Sentry's EU region; we found no public information on the vendor's own ISO 27001 or SOC 2 certification, and no self-hosted edition, though the local-LLM option via Ollama keeps translation requests on the customer's own infrastructure. 7 8 9 10 12

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Pricing transparency

How this is scored

Whether a buyer can compute the real annual cost from public pages alone: price per tier by characters, words, keys, hosted words or seats, what happens when the volume exceeds the tier, the number of users, projects and languages included, which features (machine translation volume, AI credits, SSO, integrations, API access) cost extra, the free tier and its limits, the self-hosted edition and its support, minimum term and setup.

0 — No public prices at all; every customer is a sales call.

3 — A starting price or a free tier exists, but how cost scales with volume, seats or features is unclear.

5 — Tiers are public with their price per volume band and main inclusions, but at least one commonly needed piece (overage, extra seats, machine translation or AI volume, SSO, connectors) is unpriced or "on request".

8 — Every tier priced publicly with its scaling rule (characters, words, keys, seats), overage handling stated, add-ons and AI credits priced, the self-hosted edition's cost or licence stated, minimum term and VAT treatment stated.

10 — Complete price computability: annual cost derivable for a given volume, seat count and feature set, with every add-on, setup, support and overage fee and the cancellation and data-return terms published.

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The Localization Manager

All four tiers are public — Community at €0, Developer at €12, Team at €35 and Business at €99 per month billed yearly — with priced add-ons ("+500 translation keys €5.00", "+250k characters €12.00", "+25 team members €25.00"), per-plan auto-translation allowances with monthly growth and rollover, no per-user upcharge, bring-your-own-key with no extra fees, VAT deduction at checkout, and a permanent free tier. Full annual cost is still not computable from what we captured: we found no public information on the per-tier translation key limits, monthly billing, or any price for SSO beyond its tie to the Business plan, and enterprise customization is by contact only. 6 13 11 2 17

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European sovereignty — proven facts

0 of 6 dimensions proven

Built only from facts shown on the vendor's own pages. A dimension we could not prove is left open, not scored as zero.

Hosting location Not determined ⚠ unverified — uncited Report an error
Hosting options Not determined — uncited Report an error
Open source Not determined — uncited Report an error
Data processing agreement Not determined ⚠ unverified — uncited Report an error
Transfer impact assessment Not determined — uncited Report an error

Questions about SimpleLocalize

Is SimpleLocalize European?

Yes. whats-best.ai classifies SimpleLocalize as EU-Made.

Where does SimpleLocalize store data?

Not stated on the vendor’s pages as of 1 Nov 2026.

Does SimpleLocalize have a free plan?

Yes. SimpleLocalize has a free plan, per the vendor’s page captured 1 Nov 2026.

What are the best alternatives to SimpleLocalize?

As of 2 Nov 2026, the panel rates LILT (3.5/5), Phrase Localization Platform (3.5/5) and Tolgee (3.5/5) highest among the other 12 Translation & Localization products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is Phrase Localization Platform (EU-Made). Ratings are the AI panel’s opinion, formed from public evidence: how scores are made. The full list, with European products first: SimpleLocalize alternatives.

Where this could be wrong

What we left out

A claim that does not survive our checks costs us the claim, not the page. This is what was taken off this one.

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Sources (20)

The pages every claim on this page was read from — each one checked, dated, and kept verifiable.

  1. 1 Vendor homepage simplelocalize.io Checked 1 Nov 2026 Details →
  2. 2 Features page (for developers) simplelocalize.io Checked 1 Nov 2026 Details →
  3. 3 Documentation (auto-translation) simplelocalize.io Checked 1 Nov 2026 Details →
  4. 4 Integrations page simplelocalize.io Checked 1 Nov 2026 Details →
  5. 5 API documentation simplelocalize.io Checked 1 Nov 2026 Details →
  6. 6 Pricing page simplelocalize.io Checked 1 Nov 2026 Details →
  7. 7 Legal notice simplelocalize.io Checked 1 Nov 2026 Details →
  8. 8 Privacy policy simplelocalize.io Checked 1 Nov 2026 Details →
  9. 9 Data processing agreement (dpa) simplelocalize.io Checked 1 Nov 2026 Details →
  10. 10 Security / trust page simplelocalize.io Checked 1 Nov 2026 Details →
  11. 11 Machine translation & AI quality — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  12. 12 Machine translation & AI quality — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  13. 13 Translation memory, terminology & review workflow — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  14. 14 Translation memory, terminology & review workflow — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  15. 15 Integrations, file formats & developer tools — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  16. 16 Integrations, file formats & developer tools — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  17. 17 Confidentiality of translated content — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  18. 18 Data export, portability & self-hosting — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  19. 19 Data export, portability & self-hosting — found from sitemap simplelocalize.io Checked 1 Nov 2026 Details →
  20. 20 Code repository (open-source licence) — found from the homepage github.com Checked 1 Nov 2026 Details →