Rebuild
Own your platform, not your platform’s problems. Rebuild what you can’t afford NOT to rebuild anymore.
Two tracks, one delivery model. Escape per-seat SaaS (Klaviyo, Datadog, Harvey, Salesforce, Workday — 32 productized rebuilds) or modernize a legacy app (ColdFusion, .NET Framework, Oracle Forms, ancient PHP, Access). AI-paired throughput has changed the math on both.
HOW WE SCOPE A REBUILD · NO POSTURING
We don’t rebuild Datadog. We rebuild your usage of it — the 15–25% that’s on your renewal invoice but isn’t where the SaaS earns its margin. Per-seat / per-MTU / per-host pricing taxes the whole product even when you use a fifth of it. Our rebuild is calibrated to your actual surface area — mapped in the first 30-min call, before quoting.
- Dashboards your team opens daily
- Alerts that page on-call
- Integrations already wired up (Slack, PagerDuty, GitHub, etc.)
- Reports leadership relies on
- Workflows you’ve customised over the years
- The 2–3 user roles that matter (admin / analyst / viewer)
- Features another niche product does better (we’ll point you at it)
- Edge-case enterprise modules (SIEM, advanced compliance, etc.)
- AppExchange-style ecosystems we can’t replicate
- Years of vendor-built ML / heuristics tuned across millions of clients
- The 30 features your team has never opened (and never will)
- If our audit finds you ARE using the deep end, we’ll tell you straight: the rebuild won’t pay back. Stay on the SaaS.
Whichever bill is bleeding you now.
AI-paired throughput has changed the math on two problems that used to be “too expensive to touch”: SaaS bills that grew 22% every year, and 10–15 year old apps you shelved because rewriting them was infeasible. Now both are affordable rebuilds.
Own the slice you actually use.
Replace Klaviyo, Datadog, Salesforce, Workday, Harvey, HubSpot, Shopify Plus and 25 more with the 15–25% of features your team uses daily. Custom build on AWS + Anthropic + Stripe direct — vendor bills route to you.
- Single-tool builds: $9K–$24K
- Category combo bundles: $48K–$98K
- Ship window: 4–14 weeks
- Your code, your GitHub, your AWS from day one
Retire the 10-year-old albatross.
.NET Framework 4.x, ColdFusion, Classic ASP, Oracle Forms, jQuery/AngularJS spaghetti, Windows Forms, ancient LAMP, Access-backed apps. AI-paired stack migration is now cheaper than another year of maintenance.
- Scope range: $24K–$180K depending on surface area
- Ship on TypeScript / Python / Postgres — no more per-CPU license math
- Data migration + integration tests as first-class deliverables
- Cutover playbook: blue/green, feature-flagged reads, no big-bang
What a Rebuild looks like — one per track.
Synthetic composites, not specific clients. Real engagements vary by surface area. Every scope call starts by mapping your actual usage, not a generic template. Named clients are covered in case studies.
D2C brand replaces Klaviyo + Yotpo + Segment
Problem. Klaviyo bill scaling with list growth. Yotpo review widget locked their theme. Segment CDP overhead exceeded actual event volume 4×.
Rebuilt. Marketing automation on AWS SES + Postgres. Review capture + display as their own Shopify app. Event ingestion as one Cloudflare Worker → Postgres.
Deliberately did not rebuild. Attribution reporting (they use Triple Whale — cheaper). SMS gateway (kept Klaviyo SMS on direct billing — too small to justify the build).
Insurance broker retires ColdFusion policy admin
Problem. ColdFusion 9 on a physical box in the office. One contractor left who could touch it. Compliance flagged the CF version as unpatched.
Rebuilt. Policy admin, quote engine and renewal workflow on TypeScript + Postgres + Docker on Contabo. AI-paired code migration — Claude cross-referenced the .cfm sources into the new specs.
Cutover. Blue/green with 3 weeks of read-only shadowing before write-flip. Nightly delta sync for zero-downtime data migration. Compliance sign-off week 16.
START BY INDUSTRY · 3 ICP ENTRY POINTS
If you're B2B SaaS, D2C, or a law firm, start here. Each ICP page has a curated combo recommendation calibrated to that industry's typical stack and spend.
Your stack made sense at 10 people.
HubSpot + Intercom + Sentry + Mixpanel layered up while you scaled. Four wrappers, four per-contact taxes. Replace the lot in one combo rebuild.
- Replaces
- HubSpot · Intercom · Sentry · Mixpanel
- Typical spend
- $95K–$580K/yr
- Rebuild
- $68K fixed
Klaviyo + Cloudinary + Algolia + Yotpo all charge per customer.
D2C stacks compound fast — every doubling of your contact list doubles 4 SaaS bills at once. Rebuild on direct billing and own your data warehouse.
- Replaces
- Klaviyo · Cloudinary · Algolia · Yotpo
- Typical spend
- $112K–$280K/yr
- Rebuild
- $58K fixed
Harvey AI is OpenAI with legal templates.
Per-attorney legal-AI contracts are eating mid-market firm budgets. The same workflow on Anthropic + OpenAI direct runs at <5% of list cost — typical $686K Y1 reclaim on a 50-attorney firm.
- Replaces
- Harvey · Casetext · per-seat legal AI
- Typical spend
- $1.2K–$2K/seat/mo
- Rebuild
- $24K fixed
COMBO STACK REBUILDS · 6 BUNDLES
Replace 4 SaaS tools at once with a single architectural rebuild — or retire an entire legacy stack (CB-06). Bigger upfront engagement, bigger Y1 reclaim, unified data layer.
HubSpot + Intercom + Sentry + Mixpanel. Four wrappers. One rebuild.
The standard B2B SaaS GTM + product stack. Replaced by a custom build on direct vendor billing — own the marketing automation, support inbox, observability, and product analytics in one architecture.
- Bundle
- $58K fixed · 10–14 weeks
- Managed
- $12K/mo
- 3-yr reclaim
- $78K typical
Klaviyo + Cloudinary + Algolia + Yotpo. Four wrappers. One rebuild.
The full D2C marketing + media + search + reviews stack. Rebuilt on AWS direct (SES, S3, OpenSearch, Postgres) — pay infrastructure, not per-contact wrapper fees.
- Bundle
- $48K fixed · 8–12 weeks
- Managed
- $8K/mo
- 3-yr reclaim
- $58K typical
Datadog + Sentry + Segment + Mixpanel. Four observability taxes. One rebuild.
Self-host LGTM (Loki + Grafana + Tempo + Mimir) + Sentry OSS + RudderStack + ClickHouse on your AWS. Engineering teams reclaim $36K+/yr in observability spend immediately.
- Bundle
- $58K fixed · 8–12 weeks
- Managed
- $14K/mo
- 3-yr reclaim
- $84K typical
Workday + Lattice + Greenhouse + Culture Amp. Four people-ops taxes. One rebuild.
A unified HRIS + performance + ATS + engagement platform on Postgres + direct payroll. Modular — swap out individual modules per the firm's priorities. Common starting point for $400K+ Y1 reclaim.
- Bundle
- $98K fixed · 14–18 weeks
- Managed
- $28K/mo
- 3-yr reclaim
- $148K typical
Sales Cloud + Outreach + Gong + Apollo. Four sales taxes. One rebuild.
Custom CRM + sequencer + conversation intelligence + B2B data on Postgres + Twilio + Whisper + Claude direct. The full sales-ops stack at infrastructure cost.
- Bundle
- $78K fixed · 12–16 weeks
- Managed
- $18K/mo
- 3-yr reclaim
- $108K typical
Retire ColdFusion, Oracle Forms, jQuery spaghetti and IIS. One modern stack.
The typical late-2000s enterprise app: CF or Classic ASP on IIS + Oracle Forms UI + jQuery/AngularJS spaghetti. Rebuilt on TypeScript + Postgres + Docker on Contabo — blue/green cutover, feature-flagged reads, zero-downtime data migration. Every legacy shape is different; final scope set in the discovery call.
- Bundle
- $88K typical · 14–18 weeks
- Managed
- $6K/mo
- 3-yr saving
- $120K vs licenses + maintenance
SINGLE-TOOL REPLACEMENTS · 24 REBUILDS · 8 CATEGORIES
Browse the catalog of individual SaaS replacements. Each card links to a detail page with vendor pricing analysis, our build cost, time-to-live, and the relevant infrastructure stack.
Klaviyo at 1M contacts is $120K/yr. SES is $5K.
Email automation + segmentation on AWS SES + Postmark direct. Same UI patterns, same flow logic, no per-contact tax.
- Replaces
- Klaviyo Marketing
- List
- $700–$10K+/mo
- Managed
- $3K/mo + SES
Mailchimp at 500K contacts is $30K/yr. SES is $300.
Direct AWS SES with custom UI for list management, campaigns, and template design. Own your contact list and your deliverability.
- Replaces
- Mailchimp Std / Premium
- List
- $300–$3K+/mo
- Managed
- $1.8K/mo + SES
HubSpot Marketing Hub at 100K contacts is $51K/yr.
Marketing automation + landing pages + lead scoring on direct billing. Pay for sends and storage, not per-contact pricing tiers.
- Replaces
- HubSpot Marketing Hub
- List
- $890–$8.25K+/mo
- Managed
- $2.4K/mo
Pardot is a marketing app on top of your Salesforce data.
Keep your Salesforce. Drop the Pardot upcharge. Custom marketing automation reads/writes to SFDC direct, costs ~$2,400/mo to run.
- Replaces
- Pardot / SFMC AE
- List
- $1.25K–$15K+/mo
- Build
- $24K fixed
SFMC at enterprise scale is $1M+/yr you don't have to pay.
Enterprise B2C marketing rebuilt on direct billing — email + SMS + push + journey orchestration on AWS SES + Twilio + custom UI. ~$48K build, $18K/mo managed.
- Replaces
- Salesforce Marketing Cloud
- List
- $200K–$2M+/yr
- Bundle
- $48K + $18K/mo
Sales Cloud at 100 seats is $400K/yr you don't have to pay.
Custom CRM on Postgres direct. Pipeline, accounts, contacts, activities, dashboards. Tuned to your actual sales process — no generic Sales Cloud config debt.
- Replaces
- Salesforce Sales Cloud
- List
- $165–$500/seat/mo
- Bundle
- $58K + $6K/mo
Outreach is sequences + dialer on top of Twilio.
Sales engagement (sequences, dialer, email open tracking) on Twilio + AWS direct. ~$22K build covers the standard sequencer + analytics + CRM sync.
- Replaces
- Outreach / Salesloft
- List
- $130–$250+/seat/mo
- Build
- $22K fixed
Gong is Whisper + Claude on a video archive.
Conversation intelligence rebuilt on Whisper (transcription) + Claude (summary, scoring, coaching) direct. Indexes Zoom / Google Meet / phone — no per-seat upcharge.
- Replaces
- Gong / Chorus
- List
- $240–$250/seat/mo
- Build
- $24K fixed
Apollo bundles three things. Each is commodity.
B2B contact data + sequencer + dialer rebuilt as three discrete modules on direct billing. Use only the modules you need; replace per-seat with per-API-call.
- Replaces
- Apollo / ZoomInfo
- List
- $49–$119/seat/mo
- Build
- $14K fixed
Intercom is a chat widget, an inbox, and an OpenAI wrapper.
Chat + inbox + AI deflection on direct billing. Same workflow shape, no per-resolution tax — Anthropic / OpenAI direct for the agent layer.
- Replaces
- Intercom Essential→Expert
- List
- $29–$139/seat/mo
- Managed
- $2.4K/mo
Zendesk is a ticket engine, a KB, and an AI add-on.
Ticket queue + KB + AI deflection rebuilt on Postgres + Claude direct. Migrate from Zendesk Suite without losing workflow logic — ~5K Claude resolutions/mo for ~$0 vs. Resolve's per-ticket fee.
- Replaces
- Zendesk Suite
- List
- $55–$169/seat/mo
- Managed
- $2.4K/mo + tokens
Datadog APM = Tempo. Logs = Loki. Metrics = Prometheus.
Self-host the LGTM stack (Loki + Grafana + Tempo + Mimir) on your AWS. Same dashboards, same alerts, no per-host or per-GB upcharge.
- Replaces
- Datadog Pro / Enterprise
- List
- $3K–$30K+/mo
- Deploy
- $22K fixed
Sentry is open source. sentry.io charges to host it.
Self-host the OSS Sentry on your AWS / GCP. Same SDK, same dashboards, same Slack/PagerDuty integrations — no per-event ceiling.
- Replaces
- sentry.io hosted
- List
- $1K–$15K+/mo
- Deploy
- $14K fixed
Mixpanel meters events. Amplitude meters users. ClickHouse charges per byte.
Self-hosted PostHog OR custom-built ClickHouse-based analytics on your infra. Cohorts, funnels, retention — without the per-event or per-MTU pricing meter.
- Replaces
- Mixpanel · Amplitude
- List
- $1K–$15K+/mo
- Deploy
- $14K fixed
Segment is a webhook router with transformations and a queue.
Self-host RudderStack OR build a custom event router. Same source/destination architecture, same transformations, no per-MTU billing.
- Replaces
- Twilio Segment
- List
- $1.2K–$15K+/mo
- Deploy
- $14K fixed
Algolia is Meilisearch with per-record pricing.
Self-host Meilisearch OR OpenSearch on your AWS. Same instant-search UX, same typo-tolerance, no per-record-stored ceiling.
- Replaces
- Algolia Build / Premium
- List
- $500–$5K+/mo
- Build
- $14K + $1.2K/mo
Cloudinary is S3 + CloudFront with per-asset pricing.
Direct AWS S3 + CloudFront with custom transformation pipeline (resize, format conversion, compression). Pay for storage and bandwidth, not per-asset stored.
- Replaces
- Cloudinary Plus / Advanced
- List
- $89–$3K+/mo
- Build
- $14K + $1.8K/mo
Stop paying Jasper. Pay Anthropic and OpenAI direct.
Custom AI writing UI on Anthropic + OpenAI direct. Templates, brand voice, document workflows — same Jasper feel, no per-seat tax.
- Replaces
- Jasper Creator / Pro
- List
- $39–$69/seat/mo
- Build
- $14K fixed
Harvey is GPT-4 with a legal CSS theme.
Custom legal-AI workflows on Anthropic / OpenAI direct. Document review, matter-aware retrieval, billable-time attribution. Reference: $686K Y1 reclaim on a 50-attorney firm.
- Replaces
- Harvey AI · Casetext
- List
- $1.2K–$2K+/seat/mo
- Managed
- $3.6K/mo + tokens
Workday at 1,500 employees is $720K/yr you don't have to pay.
Custom HRIS on Postgres + direct payroll integration (Gusto, Paychex, etc.). Modular — start with HRIS, add performance/ATS/engagement as you go.
- Replaces
- Workday HCM
- List
- $30–$100/emp/mo
- Bundle
- $68K + $14K/mo
NetSuite at 100 users is $300K/yr you don't have to pay.
Custom ERP on Postgres + direct accounting integration (QuickBooks, Xero, NetSuite-import). Inventory, AP/AR, GL, financial reporting — at infrastructure cost.
- Replaces
- NetSuite ERP
- List
- $999–$6K/mo + per-user
- Bundle
- $68K + $12K/mo
Notion at 500 seats is $150K/yr. Outline on a VPS is $1,200.
Self-host Outline OR Affine on your VPS. Same wiki UX, same database+page model, no per-seat billing. Migrate from Notion in a single weekend.
- Replaces
- Notion Business / Enterprise
- List
- $25–$30/seat/mo
- Deploy
- $18K fixed
Shopify Plus takes 0.25–0.40% of every dollar you sell.
Custom commerce on Stripe + Next.js + Postgres direct. Catalog, cart, checkout, customer accounts, order management — own your stack, escape the GMV tax.
- Replaces
- Shopify Plus
- List
- $28K/yr + 0.25–0.40% GMV
- Bundle
- $68K + $24K/mo
Yotpo bundles four wrappers, all on top of Postgres.
Reviews + loyalty + subscriptions + referrals on direct Postgres + Twilio (SMS) + SES (email). Modular — pick the modules you actually use.
- Replaces
- Yotpo Reviews / Loyalty / Subs
- List
- $278–$1,200+/mo
- Managed
- $1.2K/mo
Where Rebuild engagements concentrate.
B2B SaaS · E-commerce / D2C · Legal · Financial Services · Healthcare
→ ALL 8 SECTORSPattern-match to a shipped engagement.
- · CS-01 — wound-care AI mobile (Healthcare)
- · CS-03 — ed-tech multi-tenant analytics
- · CS-04 — HubSpot → Dynamics 365 CRM migration
Pick the tool. Or pick the combo. Or talk to us first.
A 30-min call: walk through your stack, get pointed at the right tile, get a fixed-price SOW within 24 hours. No fee, no obligation.
Book a 30-min call →