Best Self-Hosted Dictionaries & Translation Tools in 2026
Dictionary software, translation apps, and offline lexical reference tools.
The top-rated pick is ODict with 171 GitHub stars.
2 self-hosted dictionaries & translation tools — ranked by GitHub stars.Browse all
ODict
An open-source dictionary file format and toolchain with instant offline lookups, full-text search, and APIs for Rust, Python, and JavaScript.
Alternative to: 
Babylon
Babylon
English Dictionary OpenSource
An open, queryable English dictionary dataset with 176,023 definitions in CSV, SQLite3, and MySQL formats.
Alternative to: 
Merriam-Webster
Merriam-WebsterWhy self-host?
Self-hosting puts you in control. You own your data, avoid vendor lock-in, and eliminate recurring subscription costs. For teams handling sensitive data or operating under strict compliance requirements, running your own infrastructure is often the only viable option.