I personally cannot stand Salesforce, but luckily I do not have to use it. The cost is high and integrating with it is not fun. On the other hand, it seems to be the industry standard.
Blue Jeans is our video chat tool.
80% of our organization is on Slack. Slack is quite awesome, but you have to find your own approach to it. In our company we opened a channel for every specific topic. In addition, every client has its channel. We also have a system of x-channels for things that are off topic.
Expensify is how our employees fill expense reports.
We use QuickBooks but we had to do some integrations. For example we wrote some software to build our General Ledger. Trying to manage inventory with QuickBooks would be crazy so we only import a summary of the data.
Culture Amp is a beautifully simple tool to get employee feedback. It gets the job done, as the data show: our initial engagement was 60%--when we started using it, we went up to about 80%.
We use Namely. It is working OK and fits all our needs. We are using it for payroll as well. We are engaged with the company to make the product better. Some of the processes could be streamlined, but overall, it is light-years ahead of any product that is currently on the market.
We use Braintree. They are great, everything works. We use their Vault product to process credit card payments so that we do not have to deal with storing credit card data and we can avoid all the security issues that that implies. They also process PayPal payments etc.