When comparing Let's Encrypt vs That One Privacy Site, the Slant community recommends Let's Encrypt for most people. In the question“What are the best resources on personal data privacy and security?” Let's Encrypt is ranked 8th while That One Privacy Site is ranked 14th. The most important reason people chose Let's Encrypt is:
Lets Encrypt is a non-profit organization sponsored by EFF, Linux Foundation, and other major donors. Removing profit as a motive means their focus is security, stability, and open source, not their bank account.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Non-Profit
Lets Encrypt is a non-profit organization sponsored by EFF, Linux Foundation, and other major donors. Removing profit as a motive means their focus is security, stability, and open source, not their bank account.
Pro Free
Certs from LetsEncrypt are free, always, not just as a short-term trial.
Pro Automated
It is fairly straightforward to totally automate certificates and renewals such that you never have to worry about the dreaded "certificate expired" error. There are numerous open-source implementations of clients to fit many situations.
Pro Very easy and quick to add dozens of domains and sub-domains.
Pro Aggregates TONS of data about VPN providers
Makes it very easy to filter out what is important to you and pick a good fit VPN.
Cons
Con 90 days
Certs currently are only issued for 90 days at a time. The expectation is that users will automate renewal so that this is not an issue.
Con Domain-Verified only
Only class 1 certificates are available (the kind others charge $10 or more for). Lets Encrypt does not do Extended Validation or EV certs, nor does it offer insurance or the other features traditional vendors offer. How much of a con this is depends very much on how much you value those services.
Con VPNs are not for privacy
Anyone telling you otherwise is either incompetent or lying.
Con Only focuses on VPN and Email services
Con Not a lot of actual reviews
The site owner seems to review on the basis of random choice - the reasoning behind that can be understood, but there are some clear contenders that the community wishes they would just hurry up and review, instead of slogging through tons of random options.