What's the objective behind adopting the software? I believe you should add this detail to your question. There's a whole lot of applications available in the market, adopting and utilizing any depends upon the problem/challenges you wish to resolve. Or, the process that you want to automate or simplify?

After having worked with various e-commerce startups one thing common is people burning too much money behind something insignificant. Let me know your priorities behind software adoption and I may be of some help.