KeepSolid
KeepSolid VPN Unlimited is a personal virtual private network software developed by KeepSolid Inc. It was founded in 2018 in New York.

Features
KeepSolid VPN Unlimited applies AES-128 and AES-256 encryption to the user traffic. For the cryptographic handshake, it uses a Diffie-Hellman method (DH) with a minimum of 4096-bit key, and Elliptic curve Diffie-Hellman 256-bit protocol (ECDHE). Depending on the platform, the software also offers a number of VPN protocols to choose from: OpenVPN, L2TP/IPsec, and IKEv2.

KeepSolid VPN Unlimited is available for iOS, Android, macOS, Windows, Linux, Windows Phone, Apple TV, as well as Mozilla Firefox and Google Chrome browsers.

KeepSolid VPN Unlimited utilizes a proprietary solution named KeepSolid Wise, intended to allow the software to bypass VPN blocking. The technology routes the VPN traffic via TCP 443 and UDP 33434 ports, which makes the traffic harder to detect and block.

Additional features 
In addition to basic VPN functionality, KeepSolid VPN Unlimited offers several extensions:

 Personal VPN Server. A dedicated VPN server. It provides users with better connection speed due to the fact that its whole capacity is used by a single profile.
 Personal Static IP. Normally, VPN users are assigned random IP addresses with each session, which can cause certain inconvenience on websites that forbid dynamic IPs. Personal static IP is meant to fix this problem by binding a single IP to a user’s account.
 Additional devices per account. By default, KeepSolid VPN Unlimited only supports up to 5 devices per a single user account. Adding more devices is possible as an extension.
 Business VPN solution. With KeepSolid VPN Unlimited being designed with private users in mind, its corporate-oriented counterpart Business VPN is marketed at SMEs.

Servers 
KeepSolid VPN Unlimited is claimed to have servers in over 70 countries with over 400 servers, including Australia, Austria, Belgium, Bulgaria, Brazil, Canada, Cyprus, Denmark, Finland, France, Germany, Hong Kong, Iceland, India, Ireland, Isle of Man, Israel, Italy, Japan, Mexico, the Netherlands, Romania, Singapore, South Africa, Sweden, Switzerland, Turkey, the United Kingdom and the United States.

KeepSolid VPN Unlimited claims to provide high-quality, secure servers, and to strive to develop their server presence. Along with common VPN servers, the software features 3 streaming servers - for Netflix, BBC iPlayer, and Hulu, respectively. While torrents are forbidden on most of the servers, at least 5 servers officially allow torrenting.

Reception 
KeepSolid VPN Unlimited was founded in 2013, starting off with 2 servers in the USA and the Netherlands and being available only for iOS. The initial reception was mixed - reviewers noted the software’s fast performance and connection speeds, intuitive interface, and affordable pricing, but expressing security and privacy concerns. Since then, KeepSolid has addressed the reported issues to some extent. They have published an article on their blog, explaining why they considered some of the criticism to currently be at variance with the facts, while also recognizing some of it. A number of critics have also noticed an improvement in the quality of KeepSolid VPN Unlimited service.

As of now, KeepSolid VPN Unlimited maintains an average rating of 4/5 on Mac App store, iOS App Store, Google Play, and other stores. In 2017-2018, it was rated from “above average” to “high” by local and international reviewers and users. PCMag rated KeepSolid VPN Unlimited among the top Windows and iOS VPN apps, due to its performance in testing.

Other products

 KeepSolid Sign is an e-signature app, which is used to legally electronically sign contract and agreements.
 Roadmap Planner is an online and offline tool that offers a way to see “a helicopter view” of the projects in its timeline, keep track of parallel ongoing tasks, check big events, and share ideas with members of a team.
 Private Browser is a browser for smartphones (both iOS and Android-based), which employs a VPN technology to encrypt users traffic.
 KeepSolid Goals is a project management tool to set goals with mind maps, break them down into tasks, collaborate with teams in projects and hit results.
 VPN Lite is a freemium service that doesn’t require registration and also features a turbo streaming server in the paid version.
 Fammle is a family organizer which helps to manage busy schedules and keep all the family matters in one app.
 KeepSolid SmartDNS is a service gives access to regionally blocked websites and prevents speed drops while browsing the web.

References

Virtual private network services
Software companies established in 2013