JEV ECOSYSTEM REPORT · 2026
1,197 Jev open-source projects: 2026 ecosystem report
A data-backed analysis of 1,197 Jev projects by category, language, stars, and source-review status, based on the 2026-09-23 directory snapshot.
1,197projects indexed
640,137combined GitHub stars
596reviewed pages eligible for search
1,317source-evidence links
What the directory snapshot shows
meet the reviewed-page index gate
Basic listings remain discoverable in the radar but are not submitted as thin detail pages to search engines.
leading uses span distinct workflows
Projects extend beyond routing into agent tools, browser action, security gates, evaluation, and context processing.
leading languages form a multi-language ecosystem
The table below uses repository language labels; SDKs, integrations, and applications create different language patterns.
What the projects are built to solve
01Evaluation & Observability150
02SDK & Decision Frameworks144
03Domain & Vertical Tools122
04Agent Tooling95
05Browser & OS Action91
06Demos & Playgrounds67
07MCP & Integrations58
08Articles & Threads51
09CLI & Pipelines51
10Routing & Cost Optimization48
Programming-language distribution
01TypeScript299
02Unspecified292
03Python292
04JavaScript130
05Go38
06Rust35
07HTML21
08Swift11
09Ruby11
10Java10
Most-starred projects in the snapshot
01
langchainlangchain-ai · SDK & Integrations
★ 146,90502ai-hedge-fundvirattt · Domain & Vertical Tools
★ 63,67303litellmBerriAI · Routing & Cost Optimization
★ 59,43204oh-my-pican1357 · Routing & Cost Optimization
★ 32,82205jev-model-routerdavila7 · Routing & Cost Optimization
★ 31,19106composioComposioHQ · SDK & Decision Frameworks
★ 30,29007aivercel · SDK & Decision Frameworks
★ 26,90208cuatrycua · Browser & OS Action
★ 26,01309pydantic-aipydantic · SDK & Integrations
★ 20,12410elizaelizaOS · SDK & Decision Frameworks
★ 19,410Stars describe public attention; they do not replace a security review, performance test, or production-fit assessment.
Method and indexing policy
- Synchronize project names, authors, categories, languages, and activity from public directories and repository metadata.
- Store evidence links when behavior can be traced to fixed-version source or documentation.
- Only detail pages with evidence and complete original explanation enter the sitemap; basic listings use noindex,follow.
- Every sync carries a snapshot date, and changing metrics are never presented as permanent facts.