I run a small consulting advisory and have been using Nimbus Note (now called FuseBase) since 2020 when I moved my whole knowledge base out of Evernote. 5 years into a Business Plan lifetime deal I feel in a good position to give a frank, practitioner's opinion for Sumolings who care about productivity tools that actually work in the day-to-day pressure.

FuseBase has become a feature-rich product. The ambition of the team to be more than just a notebook (integrating task management, web clipping, collaborative docs and now increasingly AI-powered features) is apparent in the product and marketing. Product updates and the company site talk about expanded integrations and a push into more automated workflows. That ambition is good: as a consultant I want a one-stop shop for capturing meeting notes, clipping research, annotating files and doing quick analyses without switching tools. Where FuseBase does well is in how the product has blended multiple use cases. The UI supports both structured notes and freeform capture, it can store attachments and web clips, and customer support has been responsive when I have needed help.

But the rebrand from Nimbus to FuseBase is still not finished: domain redirects are inconsistent, some pages and links point to nimbusweb.com and important desktop continuity has been forgotten. My Mac desktop client is stuck in limbo: it has not received the polished modern refresh I expected and for years now the behavior and performance is behind the web app. One concrete casualty has been extensions: The Nimbus Clipper was removed from my workflow and not replaced with a clear, direct alternative. For consultants who live in the browser and clip research all the time that is a real workflow regression. Performance is my biggest recurring complaint.

FuseBase is functional but often slow. Search queries and note opens can impose multi-second waits, sometimes I have seen one-to-three second delays that feel trivial in writing but add up to real friction across a day of client work. The public messaging of the platform has not addressed this. Other modern note platforms – historically Evernote – set a baseline expectation for near-instant search and navigation. The feature proliferation of FuseBase is promising, but not if the core experience of capturing and retrieving information is still sluggish.

I am also watching the company's strategic focus with cautious optimism. The recent moves to promote AI features and "agents" are in line with industry trends and will attract new users but risk shifting development and product attention away from core note capture, clip reliability, desktop parity and speed. Personally, I don't need fancy AI assistants embedded everywhere, I need fast, reliable input, editing and search, plus robust clipping and sync behavior. If FuseBase puts more engineering effort into shiny AI demos than into the nuts and bolts of syncing, indexing and client stability, long-time users like me will feel neglected.

For potential buyers on AppSumo: FuseBase is worth a look if you want a single platform that tries to replace a constellation of apps (note taking, web clipping, lightweight tasks and collaborative docs) and you care about responsive support. The lifetime deal I bought made the financial decision easy years ago. If you are deciding now ask specific questions about Mac desktop parity, the status of browser extensions and performance benchmarks for search on data volumes similar to yours. Test the web clipping and search on a free account with real workload before you commit. If your priority is blinding speed, frictionless search and an absolutely solid desktop client, proceed with caution. FuseBase can be slower than competing tools and the rebrand inconsistencies suggest some execution risk. If the team prioritizes polishing the fundamentals (restoring and improving the clipper, accelerating search indexing and shipping a reliable Mac desktop experience) FuseBase could be a best-in-class consolidated workspace. Until then it's a powerful evolving product with moments of brilliance and still many rough edges.