Updated August 2026
    Contested · 61/100

    Open Source Photo Galleries: 25 Projects Compared

    Every open-source photo galleries project we track, scored on maintenance, momentum and licence — so you can tell the live competitors from the abandoned repositories.

    TL;DR • open source photo galleries • as of August 2026

    Photo Galleries has 25 open-source implementations in this dataset, of which 15 show real momentum and 1 are dormant or abandoned. The leader is Immich with 111k stars against a category median of 1.9k — roughly 58x the typical project. Saturation score 61/100: Contested. Several maintained alternatives exist, but no one owns the category.

    25
    Implementations
    15
    Real momentum
    1
    Dormant or dead
    60%
    Maintained rate

    Should you build a photo galleries product?

    Contested · 61/100
    25 implementations · leader 58x the median

    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.

    The practical test in this category: Immich is the reference implementation at 111k stars, and 15 of 25 projects are still shipping. A buyer evaluating you will find at least one maintained free option, so your pricing and positioning have to answer "why not self-host Immich?" in the first minute.

    The projects that actually compete

    • Immich111k stars · 2806 commits/12mo
    • PhotoPrism40k stars · 2352 commits/12mo
    • Ente28k stars · 15350 commits/12mo
    • Thumbor11k stars · 116 commits/12mo
    • LibrePhotos8.0k stars · 714 commits/12mo

    All 25 open-source photo galleries projects

    Immich

    Photo Galleries

    111k

    Photo and video backup solution directly from your mobile phone (alternative to Google Photos).

    Actively maintained
    Real momentum
    AGPL-3.0

    PhotoPrism

    Photo Galleries

    40k

    Personal photo management powered by Go and Google TensorFlow. Browse, organize, and share your personal photo collection, using the latest technologies to automatically tag and find pictures.

    Actively maintained
    Real momentum
    AGPL-3.0

    Ente

    Photo Galleries

    28k

    An end-to-end encrypted photo-sharing platform (alternative to Google Photos, Apple Photos).

    Actively maintained
    Real momentum
    AGPL-3.0

    Thumbor

    Photo Galleries

    11k

    A smart imaging service and enables on-demand cropping, resizing, applying filters and optimizing images.

    Actively maintained
    Real momentum
    MIT

    Photoview

    Photo Galleries

    6.5k

    Simple and user-friendly photo gallery for personal servers. It is made for photographers and aims to provide an easy and fast way to navigate directories, with thousands of high resolution photos.

    Actively maintained
    Real momentum
    GPL-3.0

    Piwigo

    Photo Galleries

    3.8k

    Photo gallery software for the web, built by an active community of users and developers.

    Actively maintained
    Real momentum
    GPL-2.0

    PiGallery 2

    Photo Galleries

    2.3k

    Directory-first photo gallery website, with a rich UI, optimised for running on low resource servers.

    Actively maintained
    Real momentum
    MIT

    ChronoFrame

    Photo Galleries

    1.9k

    Personal gallery application with online photo management, supporting Live/Motion Photos, and explore map.

    Actively maintained
    Real momentum
    MIT

    Damselfly

    Photo Galleries

    1.8k

    Fast server-based photo management system for large collections of images. Includes face detection, face & object recognition, powerful search, and EXIF Keyword tagging. Runs on Linux, MacOS and Windo

    Dormant
    GPL-3.0

    Immich Kiosk

    Photo Galleries

    1.6k

    Lightweight slideshow for running on kiosk devices and browsers that uses Immich as a data source.

    Actively maintained
    Real momentum
    GPL-3.0

    HomeGallery

    Photo Galleries

    1.2k

    Browse personal photos and videos featuring tagging, mobile-friendly, and AI powered image discovery.

    Actively maintained
    Real momentum
    MIT

    Chevereto

    Photo Galleries

    952

    Ultimate image sharing software. Create your very own personal image hosting website in just minutes.

    Slowing down
    AGPL-3.0

    sigal

    Photo Galleries

    942

    Yet another simple static gallery generator.

    Actively maintained
    Real momentum
    MIT

    Photofield

    Photo Galleries

    600

    Experimental fast photo viewer.

    Actively maintained
    Real momentum
    MIT

    Zenphoto

    Photo Galleries

    319

    Open-source gallery and CMS project.

    Actively maintained
    GPL-2.0

    SPIS

    Photo Galleries

    210

    A simple, lightweight and fast media server with decent mobile support.

    Actively maintained
    GPL-3.0

    Memtly

    Photo Galleries

    190

    Event photo sharing platform and gallery with slideshow that allows guests to view and share memories via a QR code.

    Actively maintained
    GPL-3.0

    This week in past

    Photo Galleries

    101

    Aggregates images taken this week, from previous years and presents them on a web page with a simple slideshow.

    Actively maintained
    MIT

    Mediagoblin

    Photo Galleries

    Media publishing platform that anyone can run (alternative to Flickr, YouTube, SoundCloud).

    Not verified
    AGPL-3.0

    PhotoStructure

    Photo Galleries

    All your family's photos and videos automatically organized into a fun and beautiful website. Runs via Docker, NodeJS, or native desktop installers.

    Not verified
    ⊘ Proprietary

    Reservo

    Photo Galleries

    Scalable image hosting script with support for CDNs, paid account upgrades, advertising spots and drag & drop upload.

    Not verified
    ⊘ Proprietary

    Single File PHP Gallery

    Photo Galleries

    Web gallery in one single PHP file.

    Not verified
    ⊘ Proprietary

    How to compete when a free version already exists

    Why 'someone already built it' is the wrong conclusion

    Existence is not competition. A project competes with you only if it is maintained, findable, deployable by your buyer and licensed for their use. Most projects fail at least one of those tests. Run all four before you shelve an idea — or before you assume you have a clear run.

    • Maintained: commits in the last twelve months and a recent release.
    • Findable: your buyer can discover it without knowing the project name.
    • Deployable: the buyer's team can actually run it without a platform engineer.
    • Licensed: the licence permits the use your buyer needs.

    How stars mislead founders

    Stars are a lifetime counter with no decay, so a project abandoned in 2022 still looks like a leader in 2026. In this dataset 149 projects are dormant, abandoned or archived, and several of them sit in the top decile by stars. Sort by momentum and commit activity instead — popularity tells you the project was once interesting, maintenance tells you whether it will still be there when your customer needs a bug fixed.

    The self-hosting cost buyers forget to count

    When a prospect says 'we could just self-host the free one', they are usually comparing your price against zero. The real comparison is your price against hosting, upgrades, backups, security patching, integration work and the engineer hours behind all of it. Quantifying that number is the single most effective response to a free-alternative objection — and it is more persuasive coming with a spreadsheet than with a feature list.

    • Infrastructure: compute, storage, backups, monitoring.
    • Upgrades: breaking releases, migration work, dependency drift.
    • Security: patching, access control, audit trails, compliance evidence.
    • Opportunity cost: engineer time not spent on your buyer's actual product.

    Licences decide business models

    Founders treat licensing as a legal footnote and then discover it dictates strategy. Permissive licences allow closed commercial forks, which is why so many managed services exist around MIT and Apache projects — and also why your differentiation cannot be the code itself. Copyleft licences, especially AGPL, remove the closed-wrapper option entirely, which reduces competition but restricts you too. Source-available licences exist precisely to stop the wrapper business.

    Open source competition: common questions

    How do I know if my startup idea already exists as open source?

    Search this database by category and by the commercial product you would replace. It covers 1665 projects across 130 categories, each mapped to the paid tool it substitutes. If your category shows a "Crowded" verdict, a maintained free version almost certainly exists and your positioning has to account for it.

    Does an open-source alternative mean I should not build my product?

    No. It means free is your price anchor. Plenty of large companies were built next to a good open-source project — the ones that failed were the ones selling the same job at a price the free tool made indefensible. Find the part of the job the project deliberately does not do, and sell that.

    What does the saturation score mean?

    Each category gets a 0–100 score built from three inputs: how many implementations exist, what share of them are still actively maintained, and how far ahead the leading project is compared with the category median. 62+ is Crowded, 38–61 Contested, under 38 Open. 11 categories are Crowded and 88 are Open.

    How is 'real momentum' calculated?

    A project has momentum when it committed code in most of the last twelve months, shipped a release recently and is not archived. 736 of 1665 projects qualify. This is the single most useful filter here — it strips out the popular-but-dead repositories that make a category look more competitive than it is.

    Can I use an open-source project commercially?

    It depends entirely on the licence. MIT, Apache and BSD let you build and sell closed products on top. GPL and AGPL require derivative work to stay open, and AGPL extends that to network use, which blocks most SaaS wrappers. BSL, SSPL and Commons Clause are source-available, not open source, and usually restrict competing commercial use outright.

    Validate before you build in a contested category

    IdeaProof scores your idea against real competitors, market size and 1,000+ documented startup failures in about two minutes.

    Validate your idea free