What does CosLogin do?
CosLogin is an anti-detect browser. Each profile opens in its own isolated environment with its own device fingerprint, its own cookies and storage, and its own proxy, so the accounts you run from one machine do not resolve back to one machine.
Their own description: a free anti-detect browser helping teams create and manage isolated browser environments.
The pitch is that it costs nothing to start
The paid anti-detect browsers charge by profile, by seat, or by both, which is what makes a five-person team running a few hundred profiles expensive before anyone has earned anything. CosLogin’s position is the free tier. If you are early, or testing whether a browser fits your workflow at all, that removes the reason to guess.
We list them because they approached us and the pairing makes sense, not because we have benchmarked them. We have not run their fingerprints against Pixelscan, Iphey or CreepJS ourselves. Do that on a trial profile before you point a valuable account at it — the same advice we give about every browser on this page, including the ones charging real money.
Who it is for
- Teams sharing profiles across several people
- Cross-border sellers running more than one storefront
- Anyone testing an anti-detect workflow before paying for one
- Operators who need isolation on a budget
Why pair it with Singapore Mobile Proxy
A clean fingerprint on a shared IP is still a linked account. The browser handles the device layer — canvas, WebGL, fonts, timezone, screen geometry. The proxy handles the network layer — the address, the carrier, the location. Platforms link on either, so isolating only the browser leaves every profile sitting on the same connection.
Point each CosLogin profile at its own Singapore Mobile Proxy port and that profile is on a real Singapore handset, on a real carrier ASN (Singtel, StarHub or M1), with genuine Singapore geolocation. One port per profile, not one port behind ten of them. That is the part that makes each account look like its own device on its own line.
Setup
CosLogin takes a standard HTTP or SOCKS5 proxy per profile, which is what we hand you: host, port, username, password. Paste those into the profile’s proxy settings, open the profile, and check the exit IP before you log into anything. If you want the port’s IP to change, rotation is available by link or through the API, so you can trigger it from whatever runs the account.
CosLogin users get 20% off a first payment with the code COSLOGIN. There is a free trial port if you want to confirm the exit is genuine Singapore carrier before spending anything.
