Freedom251 › Authenticator apps
TOTP Manager
What TOTP Manager is
TOTP Manager is a free, open-source desktop authenticator for TOTP two-factor authentication. It runs on Linux, macOS, and Windows and works entirely offline, with secrets kept on the machine and no network transmission. The app generates six-digit codes every 30 seconds using the Web Crypto API, HMAC-SHA1, and RFC 6238. TOTP secrets can be imported from a JSON file through the Load JSON control. Account entries can be searched by label or sorted alphabetically in either direction, and a single click copies a code to the clipboard. Pre-built binaries are available from the project’s Releases page. The software is built with Tauri 2 and vanilla JavaScript and licensed under GNU GPL v3.0. Secret keys remain plain text in browser localStorage rather than encrypted at rest. Its security notes warn that code running in the Tauri webview could access stored secrets.
Who it suits
It suits people who want a free desktop TOTP authenticator on Linux, macOS, or Windows, especially when offline operation matters. It is also suitable for users comfortable managing local secret storage.
What it does well
- Free and open-source desktop authenticator
- Works offline on three desktop platforms
- Six-digit codes refresh every 30 seconds
- JSON import and label search
- One-click clipboard copying
What to know first
- No encrypted backup
- No multi-device synchronization
- Secret keys stored unencrypted at rest
- Tauri webview code could access secrets
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| TOTP Manager | Free and open source · Desktop app | Free |
As github.com lists them, read 8 Oct 2026. The maker's own page has the final word.
Verdict
TOTP Manager covers core desktop TOTP tasks across Linux, macOS, and Windows without network access. Its plain-text local storage and lack of synchronization or encrypted backup are important limitations for managing sensitive accounts.
Facts from TOTP Manager's own pages
- Code generation
- It uses the Web Crypto API to compute HMAC-SHA1 signatures under RFC 6238 and refreshes six-digit codes every 30 seconds. · github.com, 8 Oct 2026
- Code type
- totp · github.com, 21 Sept 2026
- Copying codes
- The app can copy codes to the clipboard with a single click. · github.com, 8 Oct 2026
- Distribution
- The page directs users to the Releases page for pre-built binaries. · github.com, 8 Oct 2026
- Encrypted backup
- No · github.com, 21 Sept 2026
- Free plan
- Yes · github.com, 21 Sept 2026
- Import
- Users can load TOTP secrets from a JSON file using the app's Load JSON control. · github.com, 8 Oct 2026
- Multi-device sync
- No · github.com, 21 Sept 2026
- Network access
- The security notes state that secrets are stored locally and nothing is sent over the network. · github.com, 8 Oct 2026
- Offline use
- The app works fully offline, and its page says secrets never leave the user's machine. · github.com, 8 Oct 2026
- Organization
- Entries can be sorted alphabetically in ascending or descending order and searched by label. · github.com, 8 Oct 2026
- Platforms
- Supported builds are listed for macOS ARM64 and x64, Linux x64, and Windows x64. · github.com, 8 Oct 2026
- Purpose
- TOTP Manager is a free, open-source desktop authenticator for managing TOTP two-factor authentication codes. · github.com, 8 Oct 2026
- Push approvals
- No · github.com, 21 Sept 2026
- Security limitation
- The page warns that code running in the Tauri webview context could access stored secrets. · github.com, 8 Oct 2026
- Source and license
- The project is built with Tauri 2 and vanilla JavaScript, and is licensed under GNU GPL v3.0. · github.com, 8 Oct 2026
- Storage
- Secret keys are stored as plain text in browser localStorage, with no encryption at rest. · github.com, 8 Oct 2026
- Supported platforms
- macos,linux,windows · github.com, 21 Sept 2026
- Team administration
- No · github.com, 21 Sept 2026
Where TOTP Manager stands on Freedom251
- Authenticator apps#65 of 111