head to head · open source
PageIndex vs arcadedb
PageIndex has 35,765 GitHub stars, 3,152 forks, 103 open issues and last shipped yesterday. arcadedb has 1,157 stars, 145 forks, 167 open issues and last shipped today. PageIndex leads on adoption by 2,991% (35,765 vs 1,157 stars). PageIndex is written in Python under MIT; arcadedb is written in Java under Apache-2.0. PageIndex has attracted 9% as many forks as stars, arcadedb 13%. arcadedb 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
| PageIndex | arcadedb | |
|---|---|---|
| GitHub stars | ★ 36K | ★ 1.2K |
| License | MIT | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-09-19 | 2026-09-20 |
| Forks | ⑂ 3.2K | ⑂ 145 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick PageIndex if
- You weight community size — 36K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick arcadedb if
- You want the arcadedb feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and arcadedb fits your workflow better
About PageIndex
PageIndex is a vectorless, reasoning based retrieval augmented generation engine written in Python and released under the MIT license. It lives in the AI and machine learning infrastructure ecosystem, with topics spanning RAG, information retrieval, LLM reasoning, context engineering, and agentic AI. Instead of building a vector index, PageIndex generates a hierarchical tree index for each document and then lets a large language model reason its way through that tree, in the same way a human expert turns to the right section of a long report. The project ships as a Python SDK, a hosted cloud service, and a docume…
read the full PageIndex overview →
About arcadedb
ArcadeDB is an open source, Apache 2.0 multi model DBMS written in Java for teams that want graph, document, key/value, search, time series, vector embedding and geospatial workloads served from one engine instead of a stack of separate databases.
read the full arcadedb overview →
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Frequently asked questions
Is PageIndex or arcadedb more popular?
PageIndex has 35,765 GitHub stars and arcadedb has 1,157. PageIndex has the larger community by that measure.
Are PageIndex and arcadedb free?
Both are open source. PageIndex is licensed under MIT and arcadedb under Apache-2.0. Neither carries a licence fee.
What is the difference between PageIndex and arcadedb?
PageIndex is written in Python and arcadedb in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, PageIndex or arcadedb?
Choose PageIndex if you want the larger community (35,765 stars) or its MIT licence terms. Choose arcadedb if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.