BAM - Business Activities Management is a simple software for management activities. This software structure projects work orders (= clients) and activities (eg design, development, etc.) and allows you to track time to work on. Bam also allows you to issue an invoice.
Electronic Design Automation (EDA) - Index can be used in the electronic world to keep track of your: Schematic, PCB, Front Plate, Programmable Logic Device numbers. The system is web based, so try the demo and see if you can use it.