This is an electron tube catalog. Its database contents base pin-out and some parameters of components. Database contains record of more than four thousand electron tubes. There are CV/M2/VT type substitution searcher and tube characteristic drawer tool. There is monthly database update. If you want to try this application for free, download and install Tubes2 Open edition from homepage. You can use, modify and redistribute this version under GNU GPL 3.0 or later. There is yearly database update.
Download and use it now: Tubes2