The strongest CoBlocks alternative for most sites is Spectra, a far larger and more actively developed block suite that adds a template library and site-wide styling CoBlocks lacks. For lightweight, performance-first building, GenerateBlocks gives you a few flexible structural blocks, while Kadence Blocks balances rich features with speed. We ranked these from our index of 55,000+ WordPress plugins.

Why people switch from CoBlocks

• CoBlocks development slowed after GoDaddy acquired it, so people wanting an actively maintained suite move to Spectra or Kadence Blocks.
• It offers a modest set of blocks, so those wanting bigger libraries and template kits move to Essential Blocks or Otter Blocks.
• Performance-focused builders wanting minimal, lightweight blocks move to GenerateBlocks.
• Sites wanting deeper global styling and design controls move to Kadence Blocks or Spectra.

Spectra – Overall replacement

Spectra, known as Spectra and made by Brainstorm Force, is a large block library with a starter template library and global style settings. Against CoBlocks, it is more actively developed and ships far more blocks and ready-made layouts. Its drawback is that the sheer number of blocks and options can feel heavy for a site that only needs a handful of extra blocks.

Choose Spectra if you want a big, actively maintained block suite with templates.

Otter Blocks – FSE and patterns

Otter Blocks, from ThemeIsle, adds blocks, patterns, and full-site-editing features with a focus on working alongside block themes. Against CoBlocks, it stays more current with the block editor and full site editing. Its weakness is that some of the more advanced blocks and conditions are reserved for the Pro version.

Choose Otter Blocks if you want blocks built around full site editing and patterns.

Essential Blocks – Large free library

Essential Blocks, from WPDeveloper, offers one of the bigger free block collections along with patterns and templates. Against CoBlocks, it gives you noticeably more blocks and layout options out of the box. The trade-off is that loading many feature-rich blocks can add front-end weight if you are not selective about what you enable.

Choose Essential Blocks if you want a broad free block library with plenty of patterns.

Kadence Blocks – Features and speed

Kadence Blocks, from the Kadence team, is a well-rounded block suite with advanced row layouts, global colors, and a strong template library while staying reasonably light. Against CoBlocks, it offers deeper design controls and more active development. Its drawback is that the most powerful blocks and settings sit in Kadence Blocks Pro.

Choose Kadence Blocks if you want rich design controls without a heavy performance cost.

GenerateBlocks – Performance-first building

GenerateBlocks, from the makers of GeneratePress, takes the opposite approach with a small set of lightweight, highly flexible blocks like Container, Grid, and Headline. Against CoBlocks, it produces very clean, minimal markup that is excellent for performance. The trade-off is that it ships few ready-made blocks, so you build designs from primitives rather than dropping in pre-styled components.

Choose GenerateBlocks if you want minimal, fast markup and are happy building from primitives.

When to stay on CoBlocks

Stay on CoBlocks if its existing blocks already power your content and you value its clean, simple design. It integrates tightly with the GoDaddy and Go theme ecosystem and remains functional for typical layouts. Since swapping block plugins can leave migration work behind on pages already built with CoBlocks, there is little reason to switch if it still does the job.

How we ranked these

Every plugin here is scored by the WPS Score, a single 0 to 10 rating built from 21 signals covering maintenance, support responsiveness, compatibility, performance, and ratings quality across our index of 55,000+ plugins. Rankings are derived from that data, not editorial preference, and no plugin author can pay to change a score. How the WPS Score works.

Frequently asked questions

What is the best free alternative to CoBlocks?

Spectra, formerly Ultimate Addons for Gutenberg, is a strong free alternative with a large block library and starter templates. Essential Blocks and Otter Blocks also offer generous free tiers, while GenerateBlocks is the best pick if performance and clean markup are your priority.

Is CoBlocks still being updated?

CoBlocks is maintained under GoDaddy but its development has slowed compared with actively growing suites like Spectra, Kadence Blocks, and Essential Blocks. It still works, but newer plugins tend to adopt block editor and full site editing features faster.

Do Gutenberg block plugins slow down a site?

They can if they load many feature-heavy blocks and their assets on every page. GenerateBlocks is designed for minimal, clean markup, while suites like Spectra and Kadence Blocks include options to load assets more selectively to limit the impact.

The verdict

The best all-round CoBlocks alternative is Spectra for its size and active development, while GenerateBlocks wins on performance and Kadence Blocks on balancing features with speed. If CoBlocks already builds your pages well and you value its simplicity, staying put avoids needless migration work.