DigiCert secures the websites, data, and applications of the world’s top companies. DigiCert delivers the highest security standards to protect your business.
The combination of Thawte SSL certificates and uncompromised infrastructure and world-class customer service make Thawte good choice for online protection.
GeoTrust is one of the oldest and proven SSL certificates vendor. World class SSL certificates are the highest security guarantees for your online business regardless of its size.
No more 3 year licensing. The SSL industry is further shoring up their defenses, and doing away with 3 year certificate licensing terms on all SSL! Effective the 1 st March 2018, the new maximum permissible term on any and all certificates will be 2 years, well actually, to be specific 27 months. The 27 months comprises the initial 24 months validity plus an additional 3 months which as you all know, forms part of your 90 day renewal window.
You can order 3-year SSL till 30-April 2018.
More details: https://cabforum.org/2017/03/17/ballot-193-825-day-certificate-lifetimes/