When comparing Let's Encrypt vs AlternativeTo, the Slant community recommends AlternativeTo for most people. In the question“What are the best resources on personal data privacy and security?” AlternativeTo is ranked 1st while Let's Encrypt is ranked 8th. The most important reason people chose AlternativeTo is:
Full website with lots of content, info, users, comments, etc. Value for free.
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 Comprehensive
Full website with lots of content, info, users, comments, etc. Value for free.
Pro Easy to skim through content
AlternativeTo makes it easy to quickly find stuff. The lists are organized by likes which floats the best content to the top, and helpful tags warn you of undesirable attributes (such as the product being discontinued or if it includes bundleware).
Pro Filtering and sorting capabilities
The ability to filter by platform and license means that you can easily filter out software that you can't use. More specific filters and sort orders are also available.
Pro Better usability
Slant is really terrible by design.
Pro Has a lot of information about products easily accessible
Pro Shows all options
If you have a large list(~100) on slant only the first ~15 entries are displayed - even if you click see full list.
Pro Less JavaScript
Which drastically improves the sites performance.
Pro Less manipulation
Less manipulation with guest/fake accounts.
Pro Does not use redirectingat
It does not use redirectingat so links won't break if you use an ad or tracker blocker .
Pro Straightforward
Pages load much faster and there is less annoying bling bling.
Pro Moderation is superior
It has a good moderation team that removes spam or hate posts.
Pro Tag based instead of individual Questions
It is tag based so there are less duplicates.
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 Limited details available on the site itself
AlternativeTo excels at showing you options, however it doesn't really tell you why one option is better/worse than another. It lists options by the number of likes it has received, but to directly compare the options is relatively hard to do.