Proton VPN, a fully open source service, came out on top of a short list of VPN providers for small businesses by CNN. It’s free version is fully featured and advertisement free, although it’s limited to a single device. The article recognizes the option for Proton VPN’s proprietary VPN protocol (called Stealth), which can be useful in circumventing some bans on VPN use (such as trying to stream out-of-region video). However, the review also calls out Protons small number of servers and countries, as well as “poor support” for Linux, although it provides no commentary on the latter (and Proton provides a dedicated Linux app as well as support for open protocols like Wireguard).

A post on Slashdot considers the question of do-it-yourself routers for home users.
The question of trust is key among the contributors, as device firmware such as what’s used by routers is even more “closed” than proprietary software solutions, where you may be able to get some sense of what makes them up. Many of these same arguments apply to business as well, especially those that rely on the firmware bundled with their router that will likely go out of date far before the hardware stops working. This is where solutions like the OpenWRT One routers (see the details here, courtesy of Tom’s Hardware) may come in handy for SMBs.