Last week I did a bit of research to check for accounting/billing software to use internally. The aim was to find a proper solution open source.
FOSS
I could not find many great solutions but here you have some paid open source solutions and few SaaS if you do not want to host it.
Self Hosted
Not free but seems great solutions. Pay once forget about it š
SaaS
Software as a service, pay monthly and forget updating having last version or paying hosting fees. Theres many out there, this are the ones look the best for me.
- https://www.freshbooks.com/
- http://www.freeagent.com/
- https://www.hiveage.com/
- https://www.invoiceninja.com/
- https://quaderno.io/
- https://www.waveapps.com/accounting/ and its free :O
I have not decided yet which one to start using but probably form that list.