Choosing a DNS filtering service means comparing coverage, pricing models, where the resolvers are and how much work it is to run. These comparisons stick to facts you can check: each links to the vendor's own pages for dates and prices, and says when the other option is the better fit.
Cisco Umbrella end of life sets out the official end-of-sale, renewal and support dates, what Cisco recommends instead, and what to compare when you move. DNSFilter pricing lays out DNSFilter's published prices next to per-network pricing, and when each costs less. Prices and dates change, so each guide shows when it was last updated.
For MSPs weighing a switch for several clients at once, DNS filtering for MSPs covers per-client policies, white-label and pricing models in more depth.
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