head to head · open source
debezium vs OpenContracts
debezium has 13,307 GitHub stars, 3,124 forks, 131 open issues and last shipped yesterday. OpenContracts has 1,530 stars, 198 forks, 11 open issues and last shipped yesterday. debezium leads on adoption by 770% (13,307 vs 1,530 stars). debezium is written in Java under Apache-2.0; OpenContracts is written in Python under MIT. debezium has attracted 23% as many forks as stars, OpenContracts 13%. debezium was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| debezium | OpenContracts | |
|---|---|---|
| GitHub stars | ★ 13K | ★ 1.5K |
| License | Apache-2.0 | MIT |
| Written in | Java | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.1K | ⑂ 198 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick debezium if
- You weight community size — 13K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick OpenContracts if
- You want the OpenContracts feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and OpenContracts fits your workflow better
About debezium
Copyright Debezium Authors. Licensed under the Apache License, Version 2.0. The Antlr grammars within the debezium ddl parser module are licensed under the MIT License. English Chinese Japanese Korean Debezium Debezium is an open source project that provides a low latency data streaming platform for change data capture (CDC). You set up and configure Debezium to monitor your databases, and then your applications consume events for each row level change made to the database. Only committed changes are visible, so your application doesn't have to worry about transactions or changes that are rolled back. Debezium…
read the full debezium overview →
About OpenContracts
OpenContracts (Demo) Open source document intelligence you can build on. Point OpenContracts at a repository of documents and get a programmable citation graph — human annotation, structured extraction, AI agents, and a built in MCP server, all behind one API. Self hosted, MIT licensed, and built for teams working at scale. Same graph, three surfaces: a GraphQL + REST API for your apps, a Model Context Protocol server for your agents, and a React UI for your team. From documents to a citation graph — in about a minute Create a corpus, drop in your documents, and click Set up . That one click installs the…
read the full OpenContracts overview →
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Frequently asked questions
Is debezium or OpenContracts more popular?
debezium has 13,307 GitHub stars and OpenContracts has 1,530. debezium has the larger community by that measure.
Are debezium and OpenContracts free?
Both are open source. debezium is licensed under Apache-2.0 and OpenContracts under MIT. Neither carries a licence fee.
What is the difference between debezium and OpenContracts?
debezium is written in Java and OpenContracts in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, debezium or OpenContracts?
Choose debezium if you want the larger community (13,307 stars) or its Apache-2.0 licence terms. Choose OpenContracts if its feature set, stack or MIT licence fits better. Both are self-hostable.