Solo is an open source security key, and you can get one at solokeys.com. Solo is an open source security key, and you can get one at solokeys.com.Solo supports FIDO2 and U2F standards for strong two-factor authentication and password-less login, and it will protect you against phishing and other online attacks. With colored cases and multilingual guides we want to make secure login more personable and accessible to everyone around the globe.This repo contains the Solo firmware, including implementations of FIDO2 and U2F (CTAP2 and CTAP) over USB and NFC. The main implementation is for STM32L432, and it’s ported to NRF52840 and EFM32J. More Info »For development no hardware is needed, Solo also runs as a standalone application for Windows, Linux, and Mac OSX. If you like (or want to learn) hardware instead, you can run Solo on the NUCLEO-L432KC development board, or we make Solo for Hacker, an unlocked version of Solo that lets you customize its firmware.SecuritySolo is based on the STM32L432 microcontroller. It offers the following security features. True random number generation to guarantee random keys. Security isolation so only simple & secure parts of code can handle keys. Flash protection from both external use and untrusted code segments. 256 KB of memory to support hardened crypto implementations and, later, additional features such as OpenPGP or SSH. No NDA needed to develop for.Solo for HackersSolo for Hacker is a special version of Solo that let you customize its firmware, for example you can change the LED color, and even build advanced applications.You can only buy Solo for Hacker at solokeys.com, as we don’t sell it on Amazon and other places to avoid confusing customers. If you buy a Hacker, you can permanently lock it into a regular Solo.
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SoloKeys
Alternatives
| # | Image | App Name | Features | Platforms | Price | Website Link |
| 1 |  |
Google Authenticator | Android iPhone Blackberry WordPress Android Tablet Android Wear iPad |
Free | Website | |
| 2 |  |
2FA Authenticator (2FAS) | Android iPhone Android Tablet iPad |
Free | Website | |
| 4 | U2F Zero | Discontinued | Mac Windows Linux |
Free | Website | |
| 5 |  |
andOTP | Android Tablet Android |
Free | Website | |
| 6 |  |
OpenSK | Self-Hosted | Free | Website | |
| 7 |  |
Nitrokey | Mac Windows Linux |
Free | Website | |
| 8 |  |
YubiKey | Windows Android Linux Android Tablet |
Commercial | Website |
Reasons why Google Authenticator is a good alternative to SoloKeys
Google Authenticator is a great alternative to SoloKeys because it provides authentication for all of your devices, not just one. It is one of the most secure applications in the market, employing advanced encryption with time-based protection. Google Authenticator offers multi-factor authentication without having to type in long passwords every time you log in. The application also makes it easy for you to install security keys on your device.
Reasons why U2F Zero is a good alternative to SoloKeys
The U2F Zero is a good alternative to SoloKeys (open source security key) because it is compatible with more devices and has a lower price point. U2F Zero was created as an open source project and is not proprietary like SoloKeys. It is not limited to specific operating systems and can be used on any device with the USB port. The U2F Zero also has a higher level of protection than SoloKeys because of its two-factor authentication.
Reasons why andOTP is a good alternative to SoloKeys
The idea of OTP (One Time Password) as a security key is not new as it has been in use for some time now. However, OTPAuthenticator, an open source software, is a good alternative to SoloKeys as it offers the same protection and more convenience. OTPAuthenticator secures your account with two-factor authentication and works on all major web browsers and mobile phones.
Reasons why OpenSK is a good alternative to SoloKeys
Open Source Security Keys are being used more and more as a way to authenticate oneself with a website or email service. The keys have been created by hackerspaces and have been widely spread among creators so that they can be made for any USB type of device. One of the most popular alternatives to the SoloKeys, is the OpenSK which has many similarities but also some noticeable differences.
Reasons why Nitrokey is a good alternative to SoloKeys
The Nitrokey is a good alternative to SoloKeys for two reasons. Firstly, the device has a lot more features than SoloKeys. For example, the Nitrokey has an encryption key that can be used with other devices. Secondly, the device does not require you to have physical access to it in order to authenticate yourself.