i manage 2 public safety Smartnet systems, 2 private smartnet systems, and 5 LTR systems. i use a Excell spreadshets for each. one tab has the talkgroups, 1 has the portable ids, one has mobile ids, and then for the PS systems each agency has a tab for the template for each type of radio. one sheet has somthing like 75 tabs! but it works best for us and is simple to search by agency/model number/serial number/etc..