If you’ve been searching for a lightweight, no-nonsense system cleaner for an older or low-spec Windows PC, JetClean 1.5.0 might be exactly what you need. This version, released several years ago by the now-discontinued JetClean team, remains popular among users who want a simple, portable-style cleaner without bloatware, subscription fees, or cloud connectivity. ⚠️ Important Note : JetClean is no longer officially supported or updated by its original developer. Version 1.5.0 is considered abandonware . Use it only if you understand the security implications of running outdated software on a modern Windows OS. What Is JetClean 1.5.0? JetClean is a free system optimization tool designed to remove junk files, invalid registry entries, browser traces, and temporary system data. Version 1.5.0 represents the last stable build before the project was abandoned.