Turn your Word and Excel site forms into clean PDF reports. Free and open source, works offline, no account. In beta.
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DeepSeek Harness Remote can securely connect a phone or another computer to the computer where you run DeepSeek Harness, so you can continue your work anytime and anywhere, check progress anytime, and continue working.
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Ayakaleaf Pro is a free, open-source, self-hosted Overleaf alternative: Overleaf Community Edition with almost all Server Pro features — track changes, project history, admin panel, SSO, Git-bridge, Z
Open-source, local-first task manager that works offline, syncs every device, runs on a Raspberry Pi, and requires no subscription.
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Open Source Office suite for users used to MS Office - multi-platform, tuned for performance
Free, offline desktop and web app for .reb form templates
Taken from the repository README
Loading the full README.
Read the full README ↗Rebar Studio is a free, offline desktop and web app for .reb form templates:
No account, no server, no network: everything stays on the device. It runs the
reb engine, the engine Rebar's server runs, compiled to
WebAssembly, so a template behaves and prints the same in Studio and in Rebar.
| Area | What it does |
|---|---|
| Templates | Library with search, tags, archive, duplicate; a starter gallery of ten construction templates; versions (a template's next edit after a document uses it starts a new version, so documents never change) with restore; template images |
| Editor | Monaco with .reb snippets, the engine's errors and warnings as markers (unknown bindings, unused fields, invalid names and conditions), the compiled HTML, the schema, and the form the template produces |
| Documents | The form built from the schema; show-if conditions, formulas and validation from the engine; autosave, undo; live preview; finalize, duplicate, reopen as a revision, move a draft to the latest template version |
Desktop: Chromium's printToPDF with the parameters Rebar sends Gotenberg (checked pixel by pixel, npm run test:fidelity). Browser: paged.js and the print dialog. Rendered pages cannot reach the network | |
| Files | .reb, .rebpack (a template with its images, the format Rebar imports), .rebdoc (one document, self-contained), .rebbackup (the workspace); the desktop app and the installed web app open them |
| Offline | The web app installs as a PWA and works offline from its first visit; the desktop app is offline by nature |
| Appearance | Amber, Ocean, Forest and Violet app themes, saved in Settings |
| Updates | Desktop: electron-updater from GitHub Releases, stable or beta channel (a beta build follows the betas). With automatic updates on (the default), downloaded in the background and installed on quit; off, nothing is downloaded until asked. Web: a "reload" prompt |
Requirements: Node.js 22+ and Go 1.26+ on your PATH.
npm install
npm run dev # http://localhost:5173
npm run build # dist/ (type check, app, service worker)
npm run lint
npm test # unit tests, against the real engine
npm run test:e2e # Playwright: the web build and the desktop app (build first)
npm run test:fidelity # the desktop PDF against Gotenberg (GOTENBERG_URL, default :3010)
npm run dev and npm run build first run build:wasm (scripts/build-wasm.sh), which builds the
engine release pinned in go.mod to public/rebcompiler.wasm (and its PDF form build, reb v0.6.0 and
later, to public/rebpdf.wasm, which the engine worker loads on the first fillable PDF) and copies what the engine ships for
browsers (wasm_exec.js, tailwindcss.js, paged.polyfill.js, specification.md). These files
are generated, not committed.
go get -tool github.com/vanillaiice/reb/cmd/[email protected] github.com/vanillaiice/reb/cmd/[email protected]
(docs/releasing.md).reb checkout while changing the engine: REB_DIR=../compiler npm run dev.Playwright drives its own Chromium by default (npx playwright install chromium); set
CHROMIUM_PATH=/usr/bin/chromium to use the system one.
src/
app/ shell, router, onboarding, updates, files opened from the system
engine/ the engine worker and its typed client
store/ IndexedDB: templates, versions, documents, files, settings
editor/ the template editor (loaded only when a template is opened)
form/ the form filler: fields, tables, photos, signatures
render/ rendering: the PDF and paged documents, fonts, exports
formats/ .rebpack, .rebdoc, .rebbackup
documents/ library/ settings/ reference/ starters/
electron/ main process, preload (the page's only bridge), the network-isolated PDF renderer
e2e/ Playwright tests test/ Vitest tests
npm run electron:dev # build, then launch Electron
npm run electron:pack # unpacked build in release/ (fast, for testing)
npm run electron:dist # installers: AppImage and deb, NSIS and portable, dmg and zip
REBAR_STUDIO_USER_DATA=/some/folder starts the app with a separate profile (the tests use one).
Releases are tagged vX.Y.Z with gover (.gover); a tag
builds the installers (see docs/releasing.md).
Free code signing provided by SignPath.io, certificate by SignPath Foundation.
The Windows releases are signed: the installer, the portable executable and the Rebar Studio.exe
they install. Only files built from this repository are signed; the Electron and Chromium libraries
shipped next to the app keep their own signatures. Each signed file is built by the
Release workflow from a tagged commit of this repository, on
GitHub-hosted runners, and every signing request is approved by hand.
Team roles:
This program will not transfer any information to other networked systems unless specifically requested by the user or the person installing or operating it.
The one connection it makes is the update check of the desktop app: with Settings, Updates, Update automatically on (the default), it asks GitHub Releases for a newer version when it starts. Turn that setting off and Studio connects only when you press Check now. GitHub sees the request, as it sees any download from it; see the GitHub privacy statement. The web app is served by GitHub Pages and, once loaded, works without a connection.
Rebar Studio is licensed under the GNU General Public License v3.0 or later; see LICENSE. Copyright (C) 2026 hblabs.
The engine (rebcompiler.wasm) is built from reb, also
GPL-3.0-or-later. Bundled third-party components, all under GPL-compatible licenses:
wasm_exec.js: BSD-3-Clause (the Go authors)