Key takeaways
- Most small businesses need the same core small business software: business email, accounting and invoicing, payments, a calendar and file storage, plus email marketing and payroll as they grow.
- Free plans are good enough to start for invoicing, email marketing, video calls and task management; pay when you hit limits, not before.
- Choose tools that connect to each other (accounting with payments, bank and payroll) and that you can leave with your data.
- Turn on two-step verification everywhere and use a password manager; a lost email account can take the whole business offline.
Small business software is the set of apps a business runs on: email, accounting, invoicing, payments, payroll, customer records, marketing and collaboration. You do not need dozens of tools. A small, connected set that everyone uses properly beats a large set nobody understands.
This guide replaces our older lists of small business software, free email marketing software, business email clients, invoicing software and remote working tools.
Updated November 2026. Plans and prices change often; check each provider’s current terms before you sign up.
The core software stack
Table of Contents
| Need | What it does | Typical options |
|---|---|---|
| Business email, calendar and files | Email on your own domain, shared calendars, documents | Google Workspace, Microsoft 365, Zoho Workplace |
| Accounting | Books, bank feeds, tax reports | QuickBooks, Xero, FreshBooks, Zoho Books, Wave |
| Invoicing and payments | Send invoices, take cards and bank payments | Built into accounting software; Stripe, Square, PayPal |
| Payroll | Pay staff and file payroll taxes | Gusto, ADP, Paychex, QuickBooks Payroll, OnPay |
| Customer records (CRM) | Contacts, enquiries, follow-ups | HubSpot (free CRM), Zoho CRM, Pipedrive |
| Email marketing | Newsletters, offers, automations | Mailchimp, Brevo, MailerLite, Kit, Constant Contact |
| Collaboration | Chat, video calls, tasks | Slack, Microsoft Teams, Zoom, Google Meet, Trello, Asana, Notion |
| Website | Your site and online store | WordPress, Shopify, Wix, Squarespace |
| Security | Passwords and sign-in | A password manager (Bitwarden, 1Password), two-step verification |
Start with email, accounting and payments. Add the rest when the need is real.
How to choose any small business software
- Write down the job it must do and the two or three features you cannot live without.
- Check it connects to your bank, payments, accounting or website.
- Try the free plan or trial with real work for two weeks.
- Check the full price: per user, per contact, per transaction, add-ons and the price after any introductory offer.
- Check you can leave: export your data (contacts, invoices, files) in a standard format.
- Check support and security: two-step verification, user permissions, backups.
Business email and email clients
Use email on your own domain (you@yourbusiness.com) rather than a free personal address: it looks professional and stays with the business when staff change.
| Service | Best for |
|---|---|
| Google Workspace (Gmail) | Teams that work in the browser and on Android; Google Docs and Drive |
| Microsoft 365 (Outlook) | Teams that use Word, Excel and Teams |
| Zoho Mail / Workplace | Lower-cost bundles |
Email clients (the app you read mail in): Outlook and Gmail cover most needs; Apple Mail is built into Macs and iPhones; Thunderbird is free and open source; apps such as Spark add shared inboxes for teams. Choose one that supports your provider, a shared inbox if several people answer customers, and your phone.
Email marketing software (including free plans)
Email marketing lets you send newsletters and offers to customers who signed up. Most providers have a free plan limited by the number of contacts or emails a month, which is enough to start.
| Tool | Known for |
|---|---|
| Mailchimp | Familiar, many templates and integrations |
| Brevo (formerly Sendinblue) | Email plus SMS; pricing based on emails sent |
| MailerLite | Simple, good free plan, landing pages |
| Kit (formerly ConvertKit) | Creators and online businesses |
| Constant Contact | Events and local businesses; paid plans |
What to look for: sign-up forms for your website, simple automations (welcome email, birthday offer, follow-up after purchase), segmentation, and good deliverability.
Stay legal. In the US, every commercial email must follow the FTC’s CAN-SPAM rules: accurate sender details and honest subject lines, your physical postal address, a clear unsubscribe link, and opt-outs honoured within 10 business days. Each email that breaks the rules can bring penalties of more than $50,000. Only email people who agreed to hear from you.
Invoicing and accounting software
| Option | Good for |
|---|---|
| Free Advanton invoice generator | A few invoices a month, including GST invoices for India |
| Zoho Invoice | Free invoicing with online payments |
| Wave | Free accounting and invoicing for very small businesses; payment fees apply |
| FreshBooks | Service businesses that bill time |
| QuickBooks Online | Most widely used by US accountants |
| Xero | Strong bank feeds, popular in the UK, Australia and New Zealand |
| Zoho Books | Good value, strong in India |
Look for automatic payment reminders, online card and bank payments on the invoice, recurring invoices, and bank feeds so payments reconcile themselves. The Federal Reserve’s latest Small Business Credit Survey found that more than three in four employer firms face rising costs, so knowing who owes you what, every week, matters. Our small business finance guide explains the wider routine.
Payroll software
Payroll software calculates pay, withholds taxes, makes deposits and files returns. For most small employers it costs less than the penalties for one late deposit. We compare current prices in Payroll software for small companies.
Remote working and collaboration tools
| Job | Common tools |
|---|---|
| Chat | Slack, Microsoft Teams, Google Chat |
| Video calls | Zoom, Google Meet, Microsoft Teams |
| Tasks and projects | Trello, Asana, Notion, ClickUp |
| Files and documents | Google Drive, Microsoft OneDrive and SharePoint, Dropbox |
| E-signatures | DocuSign, Dropbox Sign, Adobe Acrobat Sign |
| Passwords | Bitwarden, 1Password |
| Scheduling | Calendly, Microsoft Bookings, Google Calendar appointment pages |
Agree simple rules: which tool is for what, how fast people reply, and where files live. Two chat apps and three file stores cause more confusion than they solve.
AI tools
AI assistants now draft emails, summarise documents, write product descriptions and answer customer questions. Use them for first drafts and repetitive work, check every fact and figure, and don’t paste customer or employee personal data into tools that are not approved for it. See AI for small business for practical uses.
Security basics for every tool
- Turn on two-step verification for email, banking, accounting and your website.
- Use a password manager; never share passwords by email or chat.
- Give each person their own login and remove access the day someone leaves.
- Keep backups of accounting data, website and key files.
- Be suspicious of urgent payment requests by email; confirm by phone.
Starter stacks by business size
| Business | Suggested stack |
|---|---|
| Solo freelancer | Business email, free invoicing tool, payments, a calendar booking link |
| Small shop or café | POS with payments, accounting, email marketing, Google Business Profile |
| Service business with staff | Business email, accounting, payroll, scheduling, CRM |
| Online store | Store platform, payments, accounting, email marketing, shipping app |
Related guides
- WordPress website guide
- Online marketing for small business
- Small business taxes and bookkeeping
- Free tools from Advanton
Sources
- Federal Trade Commission, CAN-SPAM Act: A Compliance Guide for Business
- Federal Reserve Banks, Small Business Credit Survey: 2026 Report on Employer Firms
Last reviewed November 15, 2026. Startup costs are estimates; check local prices, licensing and tax rules before you commit money.