Log your work hours with Toggl Track

Excel timesheets don’t give real insights on how productive you really are. Toggl Track has changed the time management field by providing a really simple time recording tool for solo users and teams. Toggl Track also has powerful reports, giving you an accurate breakdown of how you’re spending your time.
Pricing: Free for basic, Starter costs 9$ per user/month
Never miss a task with Todoist

Keeping an eye on your big goals is easy, but remembering all the tiny errands that come and go can get tricky. Todoist is an excellent task management app for managing your to-do lists, sporting a sleek look and keeping you on top of your daily tasks!
Pricing: Free basic version, 29$ per year for Premium.
Organize your projects with Trello

Trello is an amazing and simple project management and collaboration tool that uses cards to organize your ideas. Its biggest virtue is the visually appealing and simple user interface which feels intuitive, making it easy to track your project progress using Kanban methodology.
Pricing: Basic version is free, Business version costs 8.33$ per user/month
Keep people talking with Slack

Good communication is the cornerstone of great teamwork. Slack is an outstanding app for keeping your discussions and chatter organized by sorting them into different channels. What’s more, it lets you integrate update feeds from your other apps.
Pricing: Free for small teams, Advanced plans start from 6.67$ per user/month
Save your notes with Evernote
Send your invoices with Freshbooks

Freshbooks is the perfect accounting tool for non-accountants. Creating invoices can be a huge hassle if you lack experience in bookkeeping - luckily, Freshbooks has stripped invoicing down to its core components, in a simple UI that’s guaranteed to save you hours upon hours on accounting work.
Pricing: Free 30-day trial, paid plans start at 9.95$ per month