Open-source landscape
Open-Source Browser Projects for Multi-Account Work: The 2026 Landscape
Open-source browser projects solve private browsing at the engine level. AliasMode solves the other half of the problem: organizing many persistent, proxied account profiles under one free, Apache-2.0 desktop client.
Direct answer
This landscape suits developers and operators who want inspectable code. Use the privacy browsers for private browsing, and use AliasMode when the job is managing many persistent account profiles with proxies, cookies, and API automation in one open-source client.
Products in this landscape
| Product | What it does | Best for | Model |
|---|---|---|---|
| AliasMode | Free, Apache-2.0 desktop profile manager with its own open-source antidetect engine (AliasMode Firefox, MPL-2.0), Chromium support, unlimited profiles, per-profile proxies, account-free Local mode, and an AdsPower-shaped Local API. | Operators who need managed, persistent account profiles, not just a private browser window. | Free for Local and Cloud; paid service is support only. |
| Camoufox | Hardened Firefox fork with engine-level fingerprint spoofing, driven from a Python API rather than a dashboard. | Python developers who want to script anti-detect browsing sessions directly. | Free, open-source project. |
| Donut Browser | AGPL-3.0 profile manager for macOS, Windows, and Linux. Its antidetect engine, Wayfern, is a closed-source Chromium build. | Users who want native installers on every desktop OS and accept a closed engine. | Free tier; paid plans unlock automation APIs, MCP, and cloud backup. |
| Mullvad Browser | Privacy browser co-developed with the Tor Project that makes every user blend into one shared fingerprint. | Private browsing where all sessions look identical, which is the opposite of distinct account identities. | Free, open-source project. |
| LibreWolf | Hardened Firefox fork with telemetry removed and strict privacy defaults for daily browsing. | Privacy-conscious daily browsing with a familiar Firefox workflow. | Free, open-source project. |
| Tor Browser | Anonymity browser that routes traffic through the Tor network with anti-fingerprinting defenses. | Anonymity against network observers, not running many separate accounts. | Free, open-source project. |
| ungoogled-chromium | Chromium rebuilt without Google services and background requests, intended as a base for custom builds. | Teams that assemble their own hardened Chromium builds and tooling. | Free, open-source project. |
How the pieces fit
Open-source browser projects divide into two groups. Privacy browsers such as Mullvad Browser, LibreWolf, and Tor Browser harden one browsing session against tracking. Engine projects such as Camoufox and ungoogled-chromium change the browser itself. Neither group manages identities: they do not store per-account proxies, keep separate cookie jars, or orchestrate dozens of parallel profiles.
AliasMode covers the management layer. Each profile is a persistent user-data directory with its own proxy and credentials, user agent and screen parameters, deterministic fingerprint seed, cookies, groups, and tags. Profiles are unlimited and free in both Local mode and Cloud, the desktop client is Apache-2.0, and Local mode needs no AliasMode account.
| Project | Strength | Gap for multi-account work |
|---|---|---|
| AliasMode | Profile manager plus its own open-source antidetect Firefox engine | Firefox profiles have no Chrome extensions or CDP; use Chromium profiles for those |
| Camoufox | Engine-level fingerprint spoofing in Firefox | No profile dashboard; you script storage, proxies, and orchestration yourself |
| Donut Browser | Open-source launcher on every desktop OS | Closed-source Wayfern engine; MCP and automation APIs on paid plans |
| Mullvad Browser | Shared privacy fingerprint for private browsing | Deliberately prevents looking like distinct people |
| LibreWolf | Hardened daily Firefox | One shared profile state; no per-account isolation tooling |
| Tor Browser | Network-level anonymity | Slow circuits and one identity stream; wrong tool for account farms |
| ungoogled-chromium | Clean Chromium base | A starting point, not a finished product or account workflow |
AliasMode as the profile-management workhorse
The honest division of labor: engine and privacy projects change how a browser looks or behaves, while AliasMode decides which identity runs, where it connects, and what it keeps between sessions. Because the client is open source, an operator can audit how profiles, proxies, and fingerprint seeds are stored instead of trusting a closed binary.
Automation is first-class. The Local API on 127.0.0.1:50400 follows the AdsPower route shape, so existing AdsPower-style scripts map onto it, and Playwright attaches to a started profile over CDP. Local MCP lets coding agents such as Claude Code and Codex drive profiles directly from a terminal.
Measured head-to-head
We tested Camoufox and CloakBrowser (free 146) in our antidetect browser benchmark on 2026-10-28/29, each started through its own library API, next to both AliasMode engines. Camoufox scored 67.9 (B tier) and CloakBrowser (free 146) scored 63.7 (B tier). AliasMode Firefox scored 81.0 (A tier), the top score of 12 browsers.
Unlimited accounts on one device only work when every profile keeps its own identity. Two AliasMode Firefox profiles on one computer differed on 5 of 7 hashed signals. Two Camoufox profiles differed on 1 of 7 and two CloakBrowser (free 146) profiles differed on 5 of 7.
| Measure | AliasMode Firefox | AliasMode Chromium | Camoufox | CloakBrowser (free 146) |
|---|---|---|---|---|
| Tier and total, of 100 | A, 81.0 | A, 72.5 | B, 67.9 | B, 63.7 |
| Cloudflare pages passed | 3 of 3 | 2 of 3 | 3 of 3 | 3 of 3 |
| Fingerprint Pro flags | None | tampering | virtual machine | bot, tampering |
| Signals that differ between two profiles | 5 of 7 | 4 of 7 | 1 of 7 | 5 of 7 |
| Impossible values | 0 | 2 | 0 | 2 |
| Engine tested | AliasMode Firefox 156 (Firefox) | AliasMode Chromium 155.0.8059.85 build 4 (Chromium) | Camoufox 156.0.1-beta.36 (Firefox) | Chromium 146.0.7680.177 (free build) |
| Launch time, median | 3.866 s | 5.388 s | 5.198 s | 2.086 s |
| Browser RAM, median | 561.1 MB | 529 MB | 661 MB | 463 MB |
FAQ
Is an open-source browser enough to manage multiple accounts?
Not by itself. A privacy browser protects one session stream from tracking. Multi-account work needs separate persistent profiles, a proxy per identity, and a way to reopen yesterday's login state, which is profile-manager territory.
How does AliasMode relate to Camoufox-style projects?
Camoufox modifies a Firefox engine to spoof fingerprints and is driven from Python. AliasMode ships its own supported browser binary and adds the surrounding profile system: proxies, cookies, groups, Cloud sync, and a Local API for automation.
Can these open-source browsers be automated?
Most Chromium and Firefox builds expose CDP or WebDriver, so automation is possible. AliasMode adds profile orchestration around the browser: start and stop per profile through the Local API, attach Playwright over CDP, and keep cookies in the profile between runs.
What does any of this cost?
The projects listed here are free and open source. AliasMode is also free: unlimited profiles in Local mode and Cloud, an Apache-2.0 desktop client, and no account required for Local use. Paid service covers support only.
Sources and verification
- Camoufox · Camoufox official repository (checked September 2026)
- Donut Browser · Donut Browser official website (checked September 2026)
- Mullvad VPN · Mullvad Browser project page (checked September 2026)
- LibreWolf · LibreWolf official website (checked September 2026)
- The Tor Project · Tor Browser project page (checked September 2026)
- ungoogled-chromium · ungoogled-chromium official repository (checked September 2026)
Public product details can change after the check date. Facts are re-checked on a monthly cycle.
Official product evidence
- Camoufox · Camoufox official repository (checked September 2026)
- Donut Browser · Donut Browser official website (checked September 2026)
- Mullvad VPN · Mullvad Browser project page (checked September 2026)
- LibreWolf · LibreWolf official website (checked September 2026)
- The Tor Project · Tor Browser project page (checked September 2026)
- ungoogled-chromium · ungoogled-chromium official repository (checked September 2026)
Public product details can change after the check date. Facts are re-checked on a monthly cycle.