TextKeepCode
Syntax highlighting for hundreds of languages, completion, go to definition, rename and live diagnostics from language servers. Diff, merge and Git built in.
Native for Mac · no account · no telemetry
Edit anything.
Transform everything.
TextKeep is one fast, native Mac app for code, structured data, logs, Markdown and LaTeX. It opens files of many gigabytes, catches broken JSON, YAML and CSV before they bite, and keeps every byte on your Mac.
Coming soon to the Mac App Store
See what it does
For Macs with Apple silicon, macOS 15 or later. Free to use. Pro is a one-time purchase.
- JSON
- YAML
- TOML
- XML
- CSV
- TSV
- Markdown
- LaTeX
- BibTeX
- Swift
- Rust
- Python
- Go
- TypeScript
- SQL
- Dockerfile
- nginx
- Log files
- .env
- INI
- HTML
- CSS
- Shell
- Kotlin
- No account
- No telemetry
- Works offline
- Native on Apple silicon
- Pay once, keep it
One app, four workspaces
The right tools appear when you need them
TextKeep rearranges itself around the job. Switch workspace and the sidebar, inspectors and toolbar change with it. Your files, tabs and settings stay exactly where they were.
Data
JSON, YAML, TOML, XML and CSV with schema validation, a tree inspector, JSONPath and XPath, and a real table view for CSV that never mangles your quoting.
Text
Markdown with live preview and export, careful encodings and line endings, a Unicode inspector that shows invisible characters, and a distraction-free mode.
Academic
LaTeX that compiles inside the app, with no TeX install to manage. PDF preview with click-to-source, a bibliography manager and an equation editor.
Transformation Studio
Messy data in. Clean data out.
Chain steps like Filter, Rename, Convert and Validate, and watch the preview update as you go. Nothing changes until you apply it, and every step can be undone. Save the recipe and run it again next month, or from the command line.PRO
- CSV to JSON, YAML to TOML, XML to JSON and back
- Streams large files instead of loading them whole
- Shows every row it rejected, and why
10 GBfiles open and scroll smoothly, edited in place without loading them whole
2.6 GB/sliteral search in our benchmarks, with live results while you type
0 bytesof your files sent to us. There is nowhere to send them
Everything a serious editor should have
TextKeep 1.0 ships complete: no beta features, no "coming later" switches. Features marked PRO unlock with the one-time Pro purchase. Everything else is free, forever.
Search that keeps up
Literal, whole-word and regex search across a file or a whole folder, honouring .gitignore. Replace with groups and case changes like \U$1, previewed before anything is written.
Never lose a keystroke
Every unsaved change is journaled as you type. After a crash or a power cut, TextKeep reopens exactly where you were, with undo intact. Local history keeps earlier versions of every file.
Encodings done properly
UTF-8, UTF-16, UTF-32 and dozens of legacy encodings, detected on open and saved back byte for byte. Mixed line endings are flagged, never silently "fixed".
Diff, merge and Git
Side-by-side diffs and Git status for free. Three-way merge, conflict resolution, history and staging single hunks with Pro.PRO
Logs that make sense
Follow a log as it grows, colour by level, filter by time and field, and line up several logs on one timeline to see what happened first.PRO
Remote files over SSH
Open a folder on a server and edit it as if it were local, with search, diff and saving that waits for the server to confirm.PRO
Security tools
Warnings when an API key or private key is about to be saved in plain text, plus hashes, certificate inspection, Base64, hex and JWT decoding, all offline.
Markdown and HTML
Live preview that scrolls with you, tables and footnotes, and export to HTML or PDF with your own stylesheet.
Automation
Macros, scripts and a textkeep command for Terminal. Open files at a line, wait for edits to finish, or run a saved transformation in a build.PRO
AI, on your terms
Off until you turn it on. Use a model running on your own Mac, or bring your own API key. You see exactly what will be sent before it goes.PRO
Tabs, splits and workspaces
Split any way you like, keep sets of files as a workspace, and come back to every caret and fold where you left it.
A Mac app, all the way
Light and dark themes with high-contrast versions, VoiceOver, full keyboard control, Services, Quick Look and Shortcuts. It feels like it belongs on your Mac, because it does.
Academic workspace
Write your thesis, not your TeX setup
A complete LaTeX engine is built in, so a new Mac can compile a paper in minutes. Errors point to the right line, the PDF follows your cursor, and your bibliography lives next to your text.
Multi-file projects, SyncTeX, a symbol palette, a bibliography manager and Equation Studio come with Pro.PRO
Built like a bastion
Your files never leave your Mac. We don't have servers to send them to.
TextKeep is sandboxed by macOS and only sees the files and folders you open. It has no account, no analytics and no crash reporter of its own. The App Store privacy label says it plainly: Data Not Collected.
- Works fully offline
- Saves are atomic: a file is never half written
- Untrusted folders open in restricted mode
- Previews run in their own locked-down process
- AI is off until you turn it on
- Support reports you see in full and send yourself
Free to use. Pro is yours to keep.
The free version is a complete editor with no time limit, no nags and no file-size cap. TextKeep Pro is one purchase that includes every 1.x update. No subscription, no paid upgrades.
Pay for what you consume. Own what you purchase.
Free
€0
- Editing, tabs, splits and workspaces
- Syntax highlighting, completion and diagnostics
- Regex search and replace, folder search
- JSON, YAML, XML and CSV validation and table view
- Markdown, HTML and basic LaTeX with PDF preview
- Recovery, local history, diff and Git status
Launch price
TextKeep Pro
- Go to definition, references, rename and code actions
- Transformation Studio, batch runs and the command line
- Advanced CSV, JSONPath, XPath and XSD
- Log analysis, three-way merge and Git history
- Remote folders over SSH and SFTP
- LaTeX projects, SyncTeX, bibliography and Equation Studio
- Automation, macros and optional AI
Bought once in the Mac App Store and shared by every Mac signed in to the same Apple Account. The launch price is for a limited time; after it, Pro is €49.99.
Made in Malta by Nicholas Xerri
TextKeep is built by one developer who spends his days in config files, logs and data dumps, and wanted one tool that handles all of them well. The Maltese cross on every app is a nod to the bastions of Valletta, walls built to keep what matters safe. No ads, no data to sell: just a tool you pay for once and own.
Built like a bastion.