72 teams that moved to custom build

Sonora replaced HubSpot, Calendly, Vimeo, DocuSign and about a dozen other tools with internal software built on Supabase, Vercel and Claude. CEO Spencer Handley puts the difference at about $250,000 a year.

GuruSup cancelled HubSpot and now runs its CRM as an in-house data layer operated through Claude and MCP. Víctor Mollá puts the saving at €24K a year.

Max Votek replaced HubSpot, Monday.com, Notion and Zapier, about $2,000 a month together, with a personal CRM built with Claude Code at $200 a month.

Apexure replaced HubSpot, about $600 a month, with a CRM it built covering contacts, deals, quotes, support and time tracking, with a Xero sync.

SegmentStream moved off HubSpot, and later Attio, onto an AI-native CRM it built on SegmentStream Cloud. Pavel Petrinich put the HubSpot bill at over $500 a month.

Curative's CEO told Business Insider the company vibe-coded an internal CRM in about two months, cutting a $600,000 a year Salesforce bill.

The Seattle Seawolves rugby team replaced Salesforce CRM and AXS ticketing with custom systems built with Claude Code, cutting software spending by around $100,000.

Greenleaf, a real estate investment group in Atlanta, replaced Salesforce with a custom CRM that partner Dave Codrea built on Replit. PYMNTS reports about $100K a year saved and about $300 a month to maintain it.

Atonom replaced a $40,000 a year Salesforce contract with a CRM built on Lovable that costs about $1,200 a year. Figures come from Lovable's write-up.

Eurofiscalis replaced Calendly Teams for 20 advisors with a booking tool built in-house on Vercel, Supabase and Resend. The same tool later replaced Letsignit, which has its own story.

TJ Smith, an accountant, built a Calendly clone for internal use and stopped paying £29 a month for Calendly. The source does not state what the clone costs to run.

Drew Brucker replaced Calendly, $144 a year, with a scheduling app they vibe coded.

Bunny Honey Club moved its blog off Webflow, $348 a month, to Markdown files in its own repo.

Attractio, an agency, ditched Webflow because $25 a month made no sense for a 1-page website. Alen Baby rebuilt it with Claude Code on Astro and deployed it on Vercel. The source does not state the Vercel cost.

Jim Monge, owner of Zeniteq, ditched Webflow and rebuilt the blog site with vibe coding. The monthly cost went from $30 to under $10, and Jim now has full control of the source code.

Inity built its own project management and CRM tool in 70 hours on Next.js, replacing Jira and HubSpot. It puts the saving at about €15K a year.

Brackets dropped Jira and Jira Service Desk, about €6,000 a year together, for internal tooling it built.

Supademo replaced Retool, about $2,000 a year, with an internal Next.js dashboard that non-engineers built with Claude Code.

Bold.org stopped paying for Retool and moved the work to an internal backoffice, taking a $150/mo bill to zero.

The mental health charity Mind replaced Okta on its Connecting Minds extranet with sign-in built on Wagtail by Torchbox, saving a £60,000 a year licence.

Andrew Wilkinson's family office CFO replaced Addepar, priced at $50,000 to $100,000 a year, with a portfolio tracker built with Claude Code.

Vetted Health replaced LaunchDarkly with an internal feature flag platform on React micro-frontends and AWS. An engineer's portfolio puts the saving at $50K a year, a 95% cut.

Fivetran replaced Atlassian Statuspage, about $65,000 a year, with a status page built with AI coding agents. It reports a run rate of about $12,400 to $25,000 a year.

Zach Silveira wrote up replacing Auth0 at an unnamed employer with in-house OTP magic links and OAuth. The bill went from about $3K a month to nothing extra.

GRID cancelled Contentful and Twilio Segment, $32,000 a year together, after building replacements with Claude Code. CEO Hjalmar Gislason shared the numbers.

Pieter Levels replaced Google Vision's NSFW detection with an in-house Python NudeNet service that costs $0 a month. Stated saving: about $2,500 a month.

Marker.io ditched Intercom Fin for an AI support agent it built, which handles every customer conversation. It says the agent costs about $50 a month and that Fin would cost about $800.

Pieter Levels replaced Mapbox with a free in-house map layer built on OpenFreeMap. Stated saving: about $500 a month.

Robert DiLella replaced Slack, over $400 a month for the salon group, with TeamHub, a team chat app they built and open-sourced.

Deniz Sancar cut 10 subscriptions worth £301.11 a month, including GoHighLevel, Calendly, Zoom and Loom, and rebuilt six of them inside one Claude Code tool.

Pieter Levels replaced Cloudflare Stream with video streaming from an Nginx VPS. Stated saving: about $250 a month.

Pieter Levels replaced ApiFlash with an in-house $0 a month screenshot service for social images. Stated saving: about $250 a month.

Pieter Levels replaced New Relic and IPHub with error2telegram, an in-house $0 a month service for error monitoring, DDoS blocking and fleet management. Stated saving: about $250 a month.

Pieter Levels replaced ScrapingBee, and SerpAPI with it, with a vibe-coded scraper on Patchright. The old bill was $249 a month and the new one is about $1.

Buttondown replaced imgix, $200 a month, with image resizing on Cloudflare Workers at $2.

Alejandro Medina of Legendsverse saw their Kit bill reach almost $200 a month. They moved their newsletters to Amazon SES with their own tool, BYOMailer, and put the cost at about $3.

Kamil Baranek replaced a $199 a month Ahrefs plan with a self-built tool on a VPS of about $8 a month, shared with other tools.

Marc Lou built MailCheap, a newsletter platform on AWS SES and MongoDB, to leave Beehiiv. The first Beehiiv bill was $1,000 a year and the next would have been $4,000. The new setup costs under $300 a year.

Jen Soltys replaced QuickBooks, $131.50 a month, with JBI Books, a bookkeeping system of their own.

Sky Lubreski bought Scratch Golf and rebuilt its back office on Bolt as Command Center, with customer chat built in to replace Tidio. QuickBooks, Quo and Klaviyo went too and have their own stories.

Omoi paid about $1,300 a year for Harvest until a renewal came back at $21,000. It built its own tracker, Yari, instead, and dropped Asana at the same time.

Pieter Levels replaced IFTTT automations with a Telegram bot. Stated saving: about $100 a month.

Pieter Levels replaced the embedded Photopea editor in Photo AI with a vibe-coded in-house editor. Stated saving: about $100 a month.

Beka Makharoblishvili replaced Smartlead, $100 a month, with a cold mailer built with Claude in a day.

The founder of PointAnswer stopped paying more than $100 a month for a simple help center on Zendesk, including $70 a month for their RenderKu business. They built PointAnswer to host help centers for their own 3 SaaS products; the new running cost was not stated.

MakerThrive stopped paying for Skool and vibe-coded its own version with Lovable. It stated $1,188 saved and 200+ users in 4 days. The source gives no bill, billing period or running cost.

Sandipan Kundu replaced Resend with a self-built delivery system on AWS SES, taking the bill from about $90 a month to about $5.

AI Adaptive moved job tracking and client records for an 8-person team off Airtable into one custom-built system. The same system replaced Zapier, Monday.com and Notion, which have their own stories.

Hasan Cagli paid $60 a month for Buffer while using about 10% of it. They built their own scheduler, PostPlanify, which handles posts, captions and Canva designs across social platforms.

Alex Chen replaced about $50 a month of Reddit marketing tools, led by Brand24, with a free local tool they built.

Pieter Levels replaced UptimeRobot with Uptime Canary, an in-house app on Uptime Kuma.

Jez replaced Mailchimp, $45 a month, with an AI-driven terminal newsletter sender built in-house.

Jen Soltys replaced Clariti, $45 a month, with a self-built blog analytics dashboard.

Axoworks, a building design consultancy, paid Wix $40 a month for a brochure site that could not answer service questions. Its founder dropped Wix and spent 4 months building an AI edge agent site on Netlify using DeepSeek. The source does not state what the tokens or hosting cost.

Ahmed Gagan replaced DataFast, $39 a month, with DataBull, a revenue attribution tool they built.

Reilly Chase replaced the $39 a month Shopify plan behind the HostiFi merch shop with a self-built store.

Ben Tossell cancelled Superhuman after paying 30 to 40 a month for years. They built their own email client with Codex on Gmail CLI and host it on their Mac mini, with Tailscale for mobile.

Jen Soltys replaced the Tailwind Pinterest scheduler, $29.99 a month, with a self-built pin and scheduling system.

Sankalp Sinha replaced Descript, $29 a month, with a self-built video editor driven by Claude.

Nicola Amadio replaced Senja with a vibe-coded app for coaching applications and testimonials. The same app replaced a Testimonial subscription, which has its own story; the Typeform plan in the post was never paid.

Jason Sze, founder and CEO of ELeet, replaced a $29 a month Hypefury subscription with their own X post scheduler, vibe coded in 2 hours. It costs about $2.10 a month in X API calls.

Kamil Baranek replaced Brevo, about $28 a month, with a self-built tool on a VPS of about $8 a month, shared with other tools.

Justin McKelvey moved three websites off Squarespace into one Rails 8 app on Railway. The same app replaced his ConvertKit list and GoHighLevel CRM, which have their own stories; he kept Metricool.

Sid Bharath ditched WordPress and rebuilt their blog from scratch with Astro and MDX using Claude Code in a few hours. WordPress hosting at $20 a month became $0 on Cloudflare Pages.

Michael Li paid $200 a year for Format to host their photography portfolio site. They vibe-coded a replica of the site in one afternoon and now host it for free.

Shubham Bhatt built his own voice-to-text app to replace Wispr Flow, along with a subtitle generator. The post gives one $20 a month saving for both; the Wispr Flow share is estimated from its $12 to $15 a month Pro price.

Daniel Gerrells replaced the $28 a month Vercel Web Analytics add-on with self-built analytics on Bun and SQLite, on a $14.73 VPS.

Wenzel Srb, founder of Futurenaut, was paying Grammarly $140 a year. They vibe-coded their own replacement and now pay $0.

Jonathan Hind paid about £8 a month for Raycast AI just to fix selected text, then vibe-coded a macOS app called TextFix to do the same job. TextFix runs on large language models, and the source does not state what those cost. They released it as a free open-source app.

Jen Soltys replaced Canva, $119.40 a year, with Claude Code skills that resize and handle images.

Billy Restey built their own link-in-bio page to replace Linktree and said it saved $60 a year.

Jen Soltys replaced Toby, $54 a year, with a self-built tab and link organizer.