Yes. Consider HexChat (open-source, cross-platform) or KVIrc if you want a free IRC client without registration hassles.
| Client | Platform | Advantages | |--------|----------|-------------| | HexChat | Windows/Linux/macOS | Open source, no registration, modern UI | | KVIrc | Cross-platform | Scriptable, supports mIRC-like commands | | AdiIRC | Windows | Very mIRC-like, free with donation option | | Irssi | Terminal/Linux | For hardcore text users | | TheLounge | Web-based | Persistent IRC bouncer in browser |
mIRC 6.35’s trial never expires. If you don’t mind a 5-second nag screen on startup, you can use the trial legally and indefinitely. No code needed. Just download 6.35 from an archive (though security warnings apply) or better, download the latest trial from mirc.com. Mirc 6.35 Registration Code
mIRC operated under a shareware model. Users could download and use the client for free during a 30-day evaluation period. After that, the software continued to work but displayed a nag screen at startup, delaying launch by a few seconds and reminding the user to register.
A valid registration code for mIRC 6.35 looked something like this: (Note: The above is a fake example
67895-543789-12345-98765
(Note: The above is a fake example. Do not attempt to use it.)
The code format varied slightly between versions. mIRC used a cryptographic algorithm to validate keys offline, which made it possible — but illegal — for crackers to create keygens. mIRC 6.35 used an offline
Unlike modern software with online activation servers (or "phone home" features), mIRC 6.35 used an offline, algorithmic license key system. The program checked the key you entered against a mathematical formula. If it matched the expected pattern, registration was granted.
This made mIRC relatively easy to keygen. A key generator (keygen) would run a brute-force or reverse-engineered algorithm to produce an infinite number of seemingly valid keys. Popular cracking groups like Core, PARADOX, and TSRH released keygens specifically for mIRC 6.35.