Self-host gaps
v0.10.4Find missing movies in your Plex collections via TMDB
- Stars
- 577
- Port
- 8484 (Web UI)
housewrecker/gaps
What is gaps?
Gaps connects to a Plex Media Server and The Movie Database (TMDB) to discover which movies from a collection are absent from your library. If you own Alien (1979), it will recommend Aliens (1986) and Alien³ (1992). The application is written in Java 21 using Spring Boot and provides a web UI on port 8484 for configuring TMDB and Plex credentials, selecting libraries, and viewing recommendations. Results can be exported as an RSS feed. The project is no longer actively developed but remains functional. It runs via Docker (x86 and ARM images) or as a standalone Windows executable.
Should you self-host gaps?
gaps scores 49/100 on selfhost.directory (how scoring works) and ranks #70 of 142 in Media Management. It has 577 GitHub stars.
There was no stable release in the past 12 months, so check the repository's recent activity before you rely on it.
Setup is moderate: expect some configuration beyond a single command. An official Docker image is available. It is MIT-licensed and written mostly in JavaScript.
Its closest alternative on selfhost.directory is Sonarr (81/100, 17 471 stars). It scores higher overall, so compare the two before you pick. See gaps vs Sonarr side by side.
Features
- Missing movie detection
- Multi-library support
- Network timeout configuration
- Plex IntegrationRequires Plex URL, port, and authentication token
- RSS feed output
- TMDB IntegrationRequires a free TMDB API key
gaps README
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