Here is a helpful list of 30 of the top terrific tools for small businesses, feel free to add your own reviews and thoughts on these products by clicking the links.
1.     Accounting & Finance

• Freshbooks: If you need online invoicing, time tracking and expense services, this program is easy to navigate, even for the most novice business owners.
• Wave Accounting: Quickly manage payroll and manage your business receipts for free.
• Expensify: Get a handle on all of your business expenses and invoices so you can concentrate on more important things.

2.     Customer Support

• ZenDesk: Streamline your customer service interface, create support boards and streamline your response time.
• GetSatisfaction: A great customer community platform for interacting with your users, getting feedback and providing technical support.
• SurveyMonkey: Build free surveys to conduct market research, and keep a pulse on customer desires and satisfaction.

3.     Human Resources

• ZipRecruiter:  Find better talent with cross-job-board posting, resume screening and a point-based score chart to find the best candidates.
• Intelius: Run a background check on prospective employees, browse criminal records and other information to make sure you’re hiring only the best people.
• AnyPerk: Reward employees with one of the most comprehensive perks programs out there, which provides discounts in countless services.

4.     Legal

• Legal Zoom Business Attorney Plan: This attorney plan specifically tailored to small businesses provides attorney reviews of contracts and other legal documents, for a fraction of the price.
• Docusign: The most prominent service for eSignatures that is both legal and secure.
• Trademarkia: Search over 6 million registered logos, names and slogans to make sure your name or idea isn’t taken.

5.     Sales

• Highrise:  Organize notes, tasks and email conversations for up to 30,000 customers, leads, partners and contacts.
• Leads360: A sales management solution specifically tailored to turn leads into conversion, and track your performance so you can easily improve your sales.
• BidSketch: Create professional and clean client proposals in just minutes, and get a certified client signature when they approve.

6.     Marketing

• MailChimp:  Email marketing made simple with an easy-to-use collection of newsletter templates, as well as the ability to customize your own design.
• SpyFu: A keyword tool for comparing the SEM tactics of your competitors, so that you can meet equal success in your online advertising and SEO campaigns.
• HubSpot: This all-in-one inbound marketing software facilitates SEO blogging tips, lead nurturing, marketing automation and more.

7.     Operations

• Yammer:  For the international businessperson, create a private social network for your contacts to collaborate virtually, share files and spread knowledge.
• Carbonite: Excellent and affordable cloud storage and online backup for any business.
• Trello: An efficient collaboration tool that allows you to organize your projects (completed, pending and in-progress) into simplified boards.

8.     Web Development

• Balsamiq: For your next business presentation, Balsamiq allows you to mockup and design your ideas on a virtual whiteboard so they’re easier to share, modify, and get feedback on.
• 99designs: Run a graphic, logo, or web design contest, and walk away with multiple ideas and access to hundreds of designers.
• Amazon Web Services: An amazing service that allows you to run your entire business from the cloud, from business applications to mobile apps.

9.     E-commerce

• Recurly: For any business that offers subscription or recurring billing, Recurly provides a simple solution for getting this done.
• Shopify: Set up a fully hosted and customizable online shopping cart that accepts all global currencies.
• Vendio: A platform for selling your goods on multiple e-Commerce channels, including Amazon, eBay, Facebook FB -0.86% and more.

10.  Technology

• UserTesting: Get in-depth and immediate feedback on your website experience from real users, including a video of their experience as well as written answers to your questions.
• Jira: A simple and clean bug tracking and reporting system that helps you prioritize and assign issues and work through them quickly.
• MixPanel: A premiere analytics service for mobile and the web, focused on measuring very specific user actions and activity.