Software licensing is quietly eating business budgets. When you add up Microsoft 365, Dropbox Business, a password manager, a firewall subscription, and endpoint security, a 15-person company can easily spend $10,000–$20,000 per year on software alone — before hardware and support.
We're not anti-commercial software. Some of it is worth every penny. But a lot of it isn't, and the open-source alternatives have caught up in ways most IT buyers don't realize. Here are five tools we actually deploy for clients — not software we've just read about — that deliver the same results for a fraction of the cost.
LibreOffice is a fully featured office suite — Writer (Word), Calc (Excel), Impress (PowerPoint), Base (Access), Draw, and Math. It reads and writes .docx, .xlsx, and .pptx files natively, so you're never stuck unable to open a client's document. The UI is dated compared to Office 365's ribbon experience, but for day-to-day document creation, spreadsheets, and presentations, it handles everything a typical SMB needs. We deploy it on Linux workstations and Windows machines where Microsoft licensing doesn't make business sense. For businesses that need heavy macro usage or tight SharePoint integration, we'll be honest — Office 365 may still be the right call. But for pure document productivity, LibreOffice is rock solid and completely free.
We've covered Nextcloud in depth in our cloud storage post, but it belongs here too. Self-hosted file sync, sharing, calendars, contacts, collaborative document editing, and video calls — all on your infrastructure, with no per-seat fees. For a 20-person business, replacing a $15/user/month Dropbox Business plan with self-hosted Nextcloud on a $30/month VPS saves over $3,300 per year. The setup takes a few hours and maintenance is minimal once it's running. We handle all of that for clients as part of managed services.
After LastPass's 2022 breach exposed encrypted customer vaults to attackers, a lot of businesses quietly started asking whether a cloud-synced password manager is the right choice. KeePassXC is a local-first password manager — your vault is an encrypted file that lives on your machine or a storage location you control (like Nextcloud). No cloud sync means no central breach vector. The interface is clean, it supports browser integration, and it works on Windows, macOS, and Linux. For businesses that need shared team vaults, KeePassXC paired with Nextcloud storage is a zero-subscription alternative that we've deployed effectively for clients.
OPNsense is an open-source firewall and routing platform based on FreeBSD. It runs on commodity x86 hardware or dedicated mini PCs (like the Protectli Vault), and delivers features that compete directly with mid-range enterprise firewalls: stateful packet inspection, IDS/IPS via Suricata, VPN (WireGuard and OpenVPN), traffic shaping, VLAN segmentation, and a clean web UI. For clients paying $800–$1,500/year in SonicWall TotalSecure subscriptions, OPNsense is a compelling alternative — the hardware cost pays for itself in under two years, and there's no subscription cliff to fall off when renewal time comes. We deploy, configure, and maintain OPNsense firewalls as part of our managed cybersecurity practice.
Thunderbird has been the definitive open-source email client for decades, and a major 2023–2024 redesign gave it a modern look that matches its long-standing reputation for reliability. It handles multiple email accounts, supports IMAP and POP3, includes a built-in calendar (Lightning), and has robust filtering and tagging. For businesses that want a full-featured desktop email client without paying for an Outlook license — especially on Linux workstations — Thunderbird is the obvious answer. It works with Microsoft 365, Gmail, and any IMAP/SMTP server. It won't replace the full Microsoft 365 ecosystem if you're deep in Teams and SharePoint, but for email-first workflows it does everything Outlook does.
If you're curious what you're actually spending on software licenses and where open-source replacements make sense for your business, we're happy to do a quick audit. No sales pitch — just an honest look at where your dollars are going and whether they need to be.