Obtainium allows you to install and update Apps directly from their releases pages, and receive notifications when new releases are made available.

Read the Wiki

Currently supported App sources:

Open Source - General:
- GitHub
- GitLab
- Forgejo (Codeberg)
- F-Droid
- Third Party F-Droid Repos
- IzzyOnDroid
- SourceHut
Other - General:
- APKPure
- Aptoide
- Uptodown
- APKCombo
- itch.io
- Huawei AppGallery
- Tencent App Store
- vivo App Store (CN)
- RuStore
- APK4Free
- Farsroid
- CoolApk
- LiteAPKs
- Jenkins Jobs
- APKMirror (Track-Only)
- RockMods (Track-Only)
Other - App-Specific:
- Telegram App
- Neutron Code
Direct APK Link
"HTML" (Fallback): Any other URL that returns an HTML page with links to APK files

Limitations:

For some sources, data is gathered using Web scraping and can easily break due to changes in website design. In such cases, more reliable methods may be unavailable.