Nulius is described as 'Create, send and track proposals'. There are six alternatives to Nulius for a variety of platforms, including Online / Web-based, SaaS, Mac, Windows and Linux. The best alternative is PandaDoc. It's not free, so if you're looking for a free alternative, you could try Libris Unify or Docutemplate. Other great apps like Nulius are Proposeful (Paid), Coposal (Paid) and DocsCloud (Paid).
PandaDoc is an all-in-one document automation platform. Instead of using several different tools to create, send, track, and eSign documents, PandaDoc allows you to do all of this in a single intuitive interface.
Proposeful is the evolution of business proposals. Replace outdated offline documents with impressive online proposals and presentations, send them by email or message, track client access and allow clients to sign proposals by email.
Unify helps both sales and marketing departments work in harmony together. Marketing departments can share existing collateral (PDFs) to their sales teams live via the cloud. Sales teams can create personalised tailored documents using any mobile device.