telSPACE

telSPACE is an ultimate OSS or BSS billing software solution. The job it does: handling plans, proration, dunning and revenue recognition for recurring revenue.

The natural audience is SaaS and subscription companies. They also list Billing, so expect those to show up in the feature set. As a very small product team themselves (1 to 10 people), they tend to serve customers of a similar scale best. Small vendors mean quick answers and real influence on the roadmap, but check who covers support when someone is out.

telSPACE is based in Kirkland, Washington. Their site is telspace.com.

Before you commit, look at payment processor support, tax handling, and migration help. Get the renewal terms in writing before the first invoice.

Every review on Revaw shows how it was verified, so if you know telSPACE well, your review carries weight here.