There are many great free and open-source alternatives to closed source and/or paid book libraries. This project aims to track and compare the feature set between the many different options with a focus on βGratisβ (free as in free beer) open source photo libraries. βLibreβ (free as in free speech) projects are also welcome, but will likely need to be submitted via a pull request since the time in testing each different project is significant.
[!WARNING] This repository displays both objective and subjective measures of feature quality.
β = Full support (10/10 score)
β
= Feature exists in at least a limited fashion
π§ = Feature may exist but may not be practical or officially released
π° = paid feature (even if partial or optional)
β = Unknown information (help needed!)
β = Feature does not yet exist
π = Not planned (no PRs accepted / unlikely to be implemented)
#οΈβ£ = Subjective measure of feature quality (on scale of 0-10)
[!TIP] Hover over emoji for additional information (π link to related issue, π demo credentials, etc)
[!NOTE] This list is not exhaustive and is provided on a best-effort basis. No guarantees are made about its accuracy or completeness. If you find an error or omission, please report it and submit a fix when possible.
[!IMPORTANT] To help reduce bias, subjective scores are only assigned after the scoring methodology for that row has been defined.
A simple way to reward apps that focus on the most fundamental user experience: reading smoothly, resuming where you left off, and finding content quickly, all within the same app.
All need to happen in same app and be free of charge:
TBA when one application passes level 1.
[!CAUTION] Please review the data carefully. GitHub stars and other popularity signals can be manipulated, so treat rankings and perceived traction as potentially unreliable and prioritize verifiable features and documentation.

Sources:
Contributions are welcome. Please see CONTRIBUTE.md for details.
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