Translation Resources: 42 Dictionaries, Termbases and Tools by Type

Summarize this post with: 9 min read

ChatGPT Perplexity Grok Google AI

The most useful translation resources fall into nine groups: bilingual dictionaries, terminology databases, style guides, language standards, translation memory (CAT) tools, machine translation engines, localization platforms, professional associations, and quality standards. Below are 42 established resources across those groups, each with a link and a one-line note on when it helps. Most dictionaries, termbases and standards on the list are free to use.

Key takeaways

• For single words and phrases in context, start with WordReference, Linguee or Reverso Context.
• For official, specialist terminology, use the EU’s IATE and the UN’s UNTERM databases, both free.
• For consistent style in software and web content, Microsoft publishes free localization style guides for many languages.
• For professional projects, a CAT tool with translation memory (OmegaT is free and open source) saves time and keeps terms consistent.
• For websites, you need more than a dictionary: a tool that translates the pages, keeps SEO intact and lets people review the result.

This list is organised by what you are trying to do, not ranked. Every link was checked on 27 September 2026.

1. Bilingual dictionaries and phrase search

Use these when you need the meaning of a word or phrase, or want to see how real translators have handled it.

For informal language specifically, see our guide to translating slang.

2. Terminology databases

Terminology databases give you the approved translation of specialist terms in law, medicine, finance, technology and public administration.

3. Style guides

A style guide tells translators how to handle tone, formality, punctuation, dates, numbers and brand terms in a given language. If you don’t have your own, these public ones are good models.

Writing your own short style guide and glossary is one of the most effective quality improvements you can make. Our article on building a localization glossary explains how.

4. Language standards and reference data

Developers, SEO specialists and localization engineers need the codes and formats behind languages and locales.

If you work on international SEO, our complete list of hreflang language codes explains which of these codes Google accepts.

5. CAT tools (translation memory)

Computer-assisted translation (CAT) tools split text into segments, store every approved translation in a translation memory, and suggest it again when the same or a similar sentence comes back. They also check terminology and formatting.

6. Machine translation engines

Machine translation is now good enough for first drafts in most major language pairs. Use it for speed and coverage, then review what matters.

Pasting text into a translator is fine for a paragraph. For a whole website it breaks down quickly: you lose formatting, links, SEO metadata and any way of updating translations when the page changes. Our comparison of automatic and machine translation explains the difference.

7. Localization platforms for software

These platforms manage the translation of software strings (apps, games, product interfaces) with developer integrations.

If you are choosing between a software localization platform and a website translation tool, our comparisons with Lokalise and Transifex set out where each fits.

8. Professional associations and marketplaces

Use these to find qualified human translators, check credentials, or learn about the profession.

When you hire, ask for samples in your subject area and a native speaker of the target language, and agree how terminology and review will work before the first file is sent. Our guide to getting the most out of human translation services has a checklist.

9. Quality standards and frameworks

Resources for translating a website

A website is a special case. The text changes often, sits inside HTML and scripts, and has to stay findable in search. You need a tool that:

• detects all the text on your pages, including menus, forms, image alt text and metadata;
• translates automatically and then lets people edit the result in context;
• gives each language its own URL and adds hreflang tags so search engines index it;
• keeps translations in sync when you change the original page.

ConveyThis is our tool for exactly this job. It connects to WordPress, Shopify, Webflow, Wix, Squarespace and 30 more platforms, translates into any of 210 languages, and includes a visual editor, glossary, translation memory, team roles and CSV/TMX import, so you can bring in translations from a CAT tool or a translator. It also handles multilingual SEO: per-language URLs, automatic hreflang, and translated titles, meta descriptions and structured data. See all features, or compare it with other website translation tools on our alternatives page.

How to choose the right resources for your project

1. Occasional words or phrases: a dictionary plus a context search tool (WordReference, Linguee or Reverso) is enough.
2. Specialist or official text: add IATE or UNTERM, and use a professional translator with subject knowledge.
3. Regular translation work: use a CAT tool with translation memory and a glossary so you never translate the same sentence twice.
4. Software products: a localization platform that connects to your code repository.
5. Websites: a website translation tool that handles SEO and updates, with human review on the pages that bring in customers.

Whatever you choose, the classic problems stay the same. Read 8 common translation mistakes before you start.

Frequently asked questions

What is the best free translation resource? It depends on the task. For words in context, Linguee and WordReference. For official terminology, IATE and UNTERM. For professional translation work, the OmegaT CAT tool. For drafts, the free tiers of DeepL and Google Translate.

Are online dictionaries reliable enough for business content? For checking meaning, yes. For publishing, no. Business content needs a translator or reviewer who knows the context, the audience and your terminology.

What is a translation memory? A database of previously translated sentences. A CAT tool or translation platform suggests those translations when the same or similar text appears again, which saves time and keeps wording consistent.

Can I import translations from a CAT tool into my website? With ConveyThis, yes: you can import CSV and TMX files, the standard exchange format for translation memories.

Ready to translate your website with the right tools built in? Create a ConveyThis account.