5 tools compared · Checked November 4, 2026

Explorium alternatives: where to move before December 2. Keep your agent workflows running.

We compared the best Explorium alternatives on what they can see, how early they catch a switch, contacts and price.

Explorium shutdown notice. AgentSource and Vibe Prospecting end December 2, 2026.
#1Incumbently#2Crustdata#3Sumble#4TheirStack#5Coresignal
The short answer

Explorium is shutting down. AgentSource and Vibe Prospecting stop on December 2, 2026, and data is deleted by December 31. If you used it to prospect from a chat window, Incumbently is the closest replacement: an MCP server that answers tech-stack and switching questions. Crustdata and Coresignal fit teams that want raw data for their own agents.

  • Best overall: Incumbently, sales teams selling against a competitor
  • Good for: Crustdata, teams building their own AI agents
  • Good for: Sumble, team-level account mapping in large accounts
Why people switch

Why teams look past Explorium.

01Shutting down

AgentSource and Vibe Prospecting end on December 2, 2026.

02Data deletion

Explorium says data is deleted by December 31, 2026.

03Agent workflows break

Prompts and automations that call it will stop working.

04Export first

Save your lists before the platform goes offline.

The list

5 Explorium alternatives, ranked.

  1. 2

    Crustdata

    Best for: Teams building their own AI agents

    Crustdata sells real-time company and people data through an API and an MCP server, with metered alerts called Watchers. It is built for agent builders and does not focus on technographics.

    How it detects
    Real-time company and people data API
    Price
    Usage-based credits.
    • Real-time people and company data
    • Watchers for change alerts
    • MCP server
    • Not a technographics product
    • You build the workflow yourself
    JobsHiresContactsMCPAlerts
  2. 3

    Sumble

    Best for: Team-level account mapping in large accounts

    Sumble builds a knowledge graph of companies, teams, people, technologies and projects, mostly from job posts and people data. It maps which teams use which tools and who to contact. It has an MCP server listed in Claude and ChatGPT, a free plan and a $99 Pro plan.

    How it detects
    AI-built knowledge graph from job posts and people data
    Price
    Free plan (500 credits/mo). Pro $99/mo.
    • Team and org-chart detail
    • Low price and a free plan
    • MCP server
    • Signals come from job posts and people data, not infrastructure
    • No infrastructure-based removal events
    JobsHiresContactsMCP
  3. 4

    TheirStack

    Best for: Low-cost job-post data and a jobs API

    TheirStack reads job posts from hundreds of thousands of sources and infers which technologies companies use, with a confidence level and links to the jobs. It has a free plan, a cheap API, webhooks and an MCP server. Its docs say it does not infer when a company stops using a tool.

    How it detects
    Job postings only
    Price
    Free plan. API from $49/mo. App packs $109–$999 one-time.
    • Large job-post dataset
    • Low entry price and a free plan
    • Webhooks and MCP server
    • Job posts only, no infrastructure proof
    • No removal detection
    • No people or contact data
    JobsMCPAlerts
  4. 5

    Coresignal

    Best for: Data teams buying bulk datasets

    Coresignal sells large raw datasets on companies, employees and jobs, with an API, a natural-language search endpoint and an MCP server.

    How it detects
    Raw company, employee and job datasets
    Price
    Plans from $49 to $5,000 per month.
    • Large raw datasets
    • API and MCP access
    • Raw data, not tech-stack answers
    • Technographics are not a focus
    JobsHiresMCP
Side by side

All five, feature by feature.

What it sees
IncumbentlyRecommended
Crustdata
Sumble
TheirStack
Coresignal
Website code
Yes
No
No
No
No
DNS records and subdomains
Yes
No
No
No
No
Certificate logs (new subdomains)
Yes
No
No
No
No
Job posts
Yes
Yes
Yes
Yes
Yes
New hires
Yes
Yes
Yes
No
Yes
Press and news
Yes
Partial
No
No
No
Removal and switch events
Yes
No
Partial
No
No
Buyer contacts
Yes
Yes
Yes
No
Partial
MCP (Claude, ChatGPT, Cursor)
Yes
Yes
Yes
Yes
Yes
Alerts (Slack, email, webhook)
Yes
Yes
Partial
Yes
No
Price (public, Nov 2026)
Free plan with a monthly report. Pro $149/mo (3 tracked tools). Max $249/mo (10). Enterprise custom.
Usage-based credits.
Free plan (500 credits/mo). Pro $99/mo.
Free plan. API from $49/mo. App packs $109–$999 one-time.
Plans from $49 to $5,000 per month.
Timing

Who sees a switch first.

Each tool can only see the steps its data sources cover. Here is the same typical switch through each one.

Day 0Job post names the new toolDay 9New subdomain in certificate logsDay 21New hire who used it beforeDay 38DNS records go liveDay 50New tool shows on the websiteDay 74Old tool removedIncumbentlyFirst alertSees this stepSees this stepSees this stepSees this stepSees this stepSees this stepCrustdataFirst alertSees this stepDoes not see this stepSees this stepDoes not see this stepDoes not see this stepDoes not see this stepSumbleFirst alertSees this stepDoes not see this stepSees this stepDoes not see this stepDoes not see this stepSees this stepTheirStackFirst alertSees this stepDoes not see this stepDoes not see this stepDoes not see this stepDoes not see this stepDoes not see this step
Illustrative timeline of a typical switch. Steps a tool can't see are hollow.
How to choose

Five questions to ask. Before you sign anything.

Checklist

Run these against any Explorium alternative, including us.

  • Export your saved lists and prompts now
  • Pick a tool with an MCP server so your assistant keeps working
  • Check that it shows switches and removals, not only current tools
  • Re-create your top 3 prospecting prompts and compare results
  • Move any webhooks or automations before December 2
Questions

Explorium alternatives, answered.

Explorium says AgentSource and Vibe Prospecting end on December 2, 2026, and data is deleted by December 31, 2026.

If you prospected by asking questions in chat, Incumbently's MCP server works the same way inside Claude, ChatGPT and Cursor, focused on tech stacks and switching.

Sources · checked November 4, 2026

Explorium is a trademark of its owner. We compare products using public pricing and documentation. Features and prices change. If something here is out of date, email us and we will fix it.

Your turn

Leaving Explorium?

See every company using your competitor, and know when they switch. Start free, no card needed.