Can you setup custom filters on the free solution ?

If not, DNS4EU (https://www.joindns4.eu/) is free for personal use, and has no quota, and offers various endpoints for malware protection, adblocking, and other stuff.

Wdym by custom filters?

Maybe that's what you ask: NextDNS has:

- 50+ blocklists ready to use (including Easylist, Adguard, HaGeZi, Energized). You enable the ones you wish to use

- Many privacy options you can enable, including Disguised Third-Party Trackers (TIP), CNAME flattening

- Many security options you can enable, including Cryptojacking, Google Safe Browsing, IDN Homograph attacks, Typosquatting, dynamic hostnames

- Ready-to-use application-based and category-based allowing/blocking

- Custom blocking options such as allowlists, denylists, blocking certain TLDs, custom rewrites

It also has:

- Option to "Bypass Age Verification"

- Option to keep logs (in EU, Swiss or US) or not

- Free to use up to 300,000 queries / month

- Multiple profiles for different clients

- Supports virtually all browsers and all OS, desktop and mobile, either via its official app, configuration profile (iOS), or IPv4, IPv6, DNS-over-TLS/QUIC, DNS-over-HTTPS

Oh thanks, that looks like an interesting alternative

> Can you setup custom filters on the free solution?

No, but as the other person replying said, there's a huge range of built in filters and I've never felt any need to customize them.

EDIT: just spent a few minutes looking over the DNS4EU website. I can't see any configuration options at all. They just have 4 basic levels (standard, child protection, ad block, or unfiltered). So it appears less useful than NextDNS. Where did you see the ability to add custom filters?