evolus

    evolus/pencil

    The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.

    9.9K stars
    794 forks
    9.9K GitHub watchers
    Updated Nov 5, 2026
    View on GitHub

    Build with Backblaze B2

    SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.

    Explore Backblaze Labs

    Loading star history...

    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    1 release in the last 90 days, the latest 12 days ago, with 21 contributors on GitHub.

    Use Cases & Benefits

    • Provides a free, open-source tool for creating diagrams and GUI prototypes with a focus on ease of use and extensibility.
    • Offers improved performance and scalability by leveraging Electron and a new zip-based file format for large documents.
    • Use for designing wireframes and UI mockups in cross-platform desktop environments including Windows, macOS, and Linux.
    • Use for embedding custom fonts and managing complex multi-page documents structured in a tree-like model.
    • Use for exporting designs to PDF and printing with enhanced options suitable for documentation and presentation purposes.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    GPL 2.0

    Copyleft: distributing software that includes it generally requires releasing your source under the same license.

    Community files

    • README: present

    Watch-outs

    • GPL-style copyleft: including it in distributed software generally requires releasing your source under the same license.

    General guidance from repository metadata, not legal advice. How we score

    About pencil

    The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.

    http://pencil.evolus.vn

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    794+2

    Open issues

    530-4

    Compared with peers in Backend

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

    evolus/pencil compared with Backend repositories by stars, 7-day star growth, health score and last release
    RepositoryStars+7dHealthLast release
    anthropics/skills192.3K+5.2K75—
    zed-industries/zed94.7K+2.3K756 days ago
    google/skills23.8K+2.0K75—
    NationalSecurityAgency/ghidra99.4K+1.8K7519 days ago
    DuarteSantos8/openGym20.8K+1.7K757 days ago
    evolus/pencil9.9K—4212 days ago
    Category median94.7K+2.0K75—

    Discover Repositories

    Search across tracked repositories by name or description