Offline-first desktop apps in Rust and GPUI. Files stay in your folders; no account, no cloud service.

Download from office.elygpui.com or the latest release: Windows, macOS (Apple silicon and Intel) and Linux (AppImage, deb, rpm, Arch, Nix; Debian 11 and Ubuntu 20.04 or newer).

ElyMail signs in to Microsoft with OAuth, to Gmail and iCloud with an app password, and to QQ Mail, 163 and 126 with an authorization code.

Install Rust with rustup (rust-toolchain.toml pins the version), then the system packages. Every system also needs Git, Python 3, curl, Node.js 22.18 or newer (the first to run the site's TypeScript tests unflagged) and pnpm (check.sh and the site use the last two).

• macOS: Xcode (gpui compiles its shaders when the app starts, so the separate Metal toolchain is not needed); then brew install cmake ninja pkg-config make gnu-sed bison flex gettext autoconf automake node pnpm bash for LibreOffice and the checks (build-libreoffice.sh puts Homebrew's GNU make, sed, bison, flex and gettext first; the scripts need bash 5, since macOS's own bash 3.2 exits 0 after a set -u abort). The Intel release runs under Rosetta with an x86_64 bash 5 that scripts/build-bash.sh builds into ~/ely-share/bash-x86_64.
• Windows: Visual Studio 2022 with the C++ workload (MSVC, a Windows SDK and CMake with Ninja); gpui compiles its shaders with the SDK's fxc.exe. Git for Windows supplies bash and curl. LibreOffice builds under Cygwin in C:\cygwin64 (ELY_CYGWIN elsewhere) with autoconf, automake and LibreOffice's GNU make in /opt/lo/bin, as its Windows build guide sets up.
• Linux, one line per family, then pnpm. LibreOffice builds inside packaging/linux/container.sh, hence Docker. Ubuntu's own Node.js is too old, so Node.js 22 comes from NodeSource:

sudo apt install build-essential pkg-config git curl python3 docker.io libdbus-1-dev libfontconfig-dev libxcb1-dev libxkbcommon-x11-dev
curl -fsSL https://deb.nodesource.com/setup_22.x | sudo -E bash - && sudo apt install nodejs
sudo dnf install gcc make pkgconf-pkg-config git curl python3 nodejs npm moby-engine dbus-devel fontconfig-devel libxcb-devel libxkbcommon-x11-devel
sudo pacman -S --needed base-devel git curl python nodejs npm docker dbus fontconfig libxcb libxkbcommon-x11
sudo npm install -g pnpm

scripts/doctor.sh checks each of these for the system it runs on.

scripts/doctor.sh                 # toolchain versions
scripts/fetch-references.sh       # upstream sources at pinned commits
scripts/build-libreoffice.sh      # patched LibreOffice 26.2.6.3 (about an hour)
scripts/build-mupdf.sh            # patched MuPDF 1.28.5
scripts/build-git.sh && scripts/fetch-git-lfs.sh
scripts/fetch-tessdata.sh
cargo build -p ely-lok --bins -p ely-pdf-worker
cargo run -p ely-doc              # or ely-table, ely-show, ely-pdf, ely-mail, ely-tree, ely-mark

ElyMail needs a Microsoft client ID at build time: put ELY_MICROSOFT_CLIENT_ID=<id> in cred.txt at the repository root (git ignores it).

The scripts run on macOS, on Windows (LibreOffice under Cygwin, MuPDF with MSBuild) and on Linux inside packaging/linux/container.sh, an AlmaLinux 8 image that keeps the binaries on glibc 2.28.

ElyTable can run local R macros on a selected range, including values, header formatting and column widths. See docs/r-macros.md for setup, the small API and its limits. Requires R (Rscript) and a LOK engine built with patch 0081.

Pushing a v* tag runs .github/workflows/release.yml. Self-hosted runners build macOS (arm64, and Intel under Rosetta), Windows and Linux with scripts/ci.sh and upload each app's packages, update manifests and the source archives to the GitHub release. macOS builds are signed and notarized.

cargo test --workspace; the script tests in tests/scripts (the window tests need macOS Accessibility permission; Linux tests run in containers); the benchmarks tests/perf/bench.py and tests/perf/folder-search.rs.

MIT (LICENSE). Third-party components keep their own licences; see docs/licenses.md.