How Safe Is CatLean? Verifying Closed Source Client Safety in 2024

The first thing checked was whether the new website and domain were actually official. At first, the new domain looked suspicious, especially since the old one just showed a blank page. The only way to confirm it was real was by checking the official Discord, which listed the new domain as the right place to get the client. This cleared up the confusion, but it shows how important it is to always check official sources before downloading anything. There’s no public archive of older builds, so you can only get the latest version directly from the site. This means if you want an older version, you have to save it yourself or look for it in random places online, which is risky and not ideal. Having an official archive would make things easier and safer for everyone who wants to stick with a specific version or just compare changes.

The closed source nature of the client is a big reason for the safety questions. Since the code isn’t public, there’s no way to look inside and see exactly what it does. This leads to a lot of people asking if it’s safe, and some even saying it might be a rat. The video looked into these claims and found no real evidence behind them, just people spreading rumors without proof. The only way to really know is to watch for any real reports or strange behavior, but so far nothing like that has come up. The best approach is to be careful about where you get the client, stick to the official site, and avoid any sketchy mirrors or random links in chats. That’s just basic caution, not panic. The lack of open code does mean you have to trust the developers more than with open source clients, but the video made it clear that the current claims against it don’t hold up.

Installing the client was straightforward. The process is just dropping the jar, the fabric kotlin jar, and the fabric api into the mods folder, then launching the right version of the game. The new website has a documentation page with requirements and a full install guide, which helps a lot. There are also guides for setting up auto crystal and kill aura, and these guides are actually useful, not just filler text. More documentation would be nice for other modules, but what’s there covers the basics.

In actual use, the modules worked well and had a lot of settings to play with. The utility and render modules stood out for having a lot of options. The nametags module, for example, lets you see other users and shows health in a clean way. The player hearts mode looks good and works well. Hand chams and swing animations add visual effects to your hands and items, with the double glow RGB effect being a favorite. Crystal chams let you customize end crystal renders, and again, there are a lot of settings. Fast latency is useful for seeing ping spikes, which is especially handy for players with higher ping. It made it obvious how unstable ping could get during fights. Player ESP has a lot of visual options, and the skeleton render is both clean and helpful in PvP. These features don’t lag the computer, which is a problem with some other clients.

Combat modules are just as detailed. Kill aura has a huge number of settings, including different rotation modes for vanilla, Vulcan, or blatant hacker fights. Auto crystal supports 1.12.2 placement for older servers and has settings for anti-cheats like grim, which is useful for places like 2b2t. The amount of settings here is way above what most free clients offer. Legit totem moves a totem to your hand in a way that looks legit and isn’t detectable by anti-cheats or screen recorders. Mace elytra target uses elytra, rockets, and mace to hit players with a lot of damage, and the timing works even with higher ping. All these modules worked as expected, and the range of settings means you can adjust them for different servers or playstyles, from legit to blatant.

The GUI uses P as the default key, but you can change it. The layout is different from most clients, mixing a standard style with a bit of a csgo theme. There are fewer columns but more categories per column, which makes it easy to find things. You can middle click a module to set a keybind, or hold alt to see all active keybinds. This is different from other clients but feels natural after a bit of use. The default look is clean, and you can create or import custom themes, though these aren’t as customizable as in some other clients. The windows tab lets you manage configs, waypoints, proxies, macros, and friends in one place, which is convenient. The HUD editor is fully customizable, letting you drag modules anywhere and snap them into place. The modules look good and are functional, but you can’t customize them much beyond moving them.

There are a few usability issues that come up. Some modules don’t flip or mirror when you expect them to. Some text areas in the GUI don’t support shortcuts like copy, paste, or select all, which slows things down if you want to move settings or notes around. None of the modules have tooltips, which makes it harder for new users to figure out what each setting does without digging through documentation or asking in Discord.

For support, the Discord server is the main place to get help. There are plenty of active users and a bot that answers common questions. The website’s documentation tab lists required and recommended mods and has guides for a couple of modules, but more documentation would help, especially for less obvious features.

The biggest friction right now is the lack of an official archive for older builds. If you want to use an earlier version or check how something worked before an update, there’s no easy way to do it except by saving your own copies or risking sketchy downloads from random sources. This makes it harder to troubleshoot problems or keep a stable setup if you run into bugs with the latest release.