ElasticSearch
Search Engines
Distributed, RESTful search and analytics engine.
Actively maintained
Real momentum
SSPL-1.0
Peer based, decentralized search engine server.
Yacy is an open-source search engines project, with 4.0k GitHub stars and a health score of 72/100. It committed 211 times in the last twelve months across 12 of those months, and its status is actively maintained. Licence: GPL-2.0. It has real momentum, so treat it as a live competitor rather than a stale repository.
| Status | Actively maintained — Committed within the last 45 days. |
|---|---|
| Last commit | 2026-08-15 |
| Days since last commit | 2 |
| Commits, last 3 months | 54 |
| Commits, last 12 months | 211 |
| Months with activity | 12 of 12 |
| Last release | None detected |
| Archived | No |
| Licence | GPL-2.0 |
| Category | Search Engines |
Health score combines commit recency, twelve-month commit volume, months with activity, release recency and archive state. Metadata refreshed August 2026.
Copyleft (GPL, AGPL, MPL): derivative work must stay open. AGPL also covers software offered over a network, which blocks most closed SaaS wrappers.
This matters most when you plan to sell a hosted version. A permissive licence means anyone — including a competitor with more capital — can do the same, so your defensibility has to come from distribution, support or data, not from the code.
Yacy is shipping code consistently, so a buyer comparing your product will find a maintained free option. Price and position against the total cost of self-hosting it, not against the paid incumbent's list price.
Winnable, but differentiation is not optional. Pick one underserved segment and be visibly better for it rather than competing feature-for-feature with a free tool.
Actively maintained. Yacy recorded 211 commits over the last twelve months, with activity in 12 of those months and 54 commits in the last quarter. Last commit: 2026-08-15. No recent release was detected. Committed within the last 45 days.
Yacy is published under GPL-2.0. Copyleft (GPL, AGPL, MPL): derivative work must stay open. AGPL also covers software offered over a network, which blocks most closed SaaS wrappers.
16 open-source implementations, 11 of them actively maintained, led by ElasticSearch at 78k stars. Saturation score 47/100 — Contested. Several maintained alternatives exist, but no one owns the category.
Search Engines
Distributed, RESTful search and analytics engine.
Alternative to Algolia, Search
Ultra relevant, instant and typo-tolerant full-text search API.
Search Engines
Internet metasearch engine which aggregates results from various search services and databases (Fork of Searx).
Alternative to Algolia, Digital search experience, Search
Blazing fast, typo-tolerant open source search engine optimized for developer happiness and ease of use.
Search Engines
Search engine that requires minimal resources (alternative to Elasticsearch).
Search Engines
Distributed and RESTful search engine.
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