Apollo alternative

The open-source Apollo alternative

Keep Apollo's data and own everything around it. AgentSDR connects Apollo as an enrichment provider with your own key, then handles sequences, LinkedIn, WhatsApp and the replies in software you host.

Star on GitHub Self-host it

agentsdr.your-company.com/outreach/campaigns

The short version

AgentSDR and Apollo, in a line each

Apollo is a hosted go-to-market platform: a B2B contact and company database with engagement tools on top.

AgentSDR

The workflow layer: sequences, LinkedIn, WhatsApp, an AI CRM and tables, with Apollo as one of 15 data sources.

Apollo

The data itself, at a scale AgentSDR does not have, with a dialer, signals and a Chrome extension.

Side by side

AgentSDR vs Apollo, feature by feature

These tools are less rivals than neighbours. Apollo's strength is its database. AgentSDR's is the workflow you own, and it can call Apollo for the data.

AgentSDR compared with Apollo, feature by feature
Feature	AgentSDR	Apollo
Where it runs	YesSelf-hosted. AGPL-3.0 source on your own server and database	Hosted by Apollo, with a free plan and paid tiers
How you pay	No seat or contact fees from AgentSDR. You pay for your server and the services you connect	Per-seat subscriptions with credits pooled across the team each billing cycle
Contact and company data	PartlyNo database of its own, but Apollo is one of its enrichment providers, used with your Apollo key	YesA database of 240M contacts and 30M companies per its site
Enrichment	Yes15 Apollo actions in tables, plus 14 other providers, AI and HTTP columns	YesEnrichment in the product and through its API, including waterfall enrichment
Email sequences	PartlyMulti-step sequences from Google Workspace mailboxes, with per-mailbox limits	YesEmail sequences. Its free plan connects Gmail only
Calling	PartlyWhatsApp calls placed from the app, recorded and transcribed. No phone dialer	YesA Parallel Dialer
LinkedIn automation	YesSeveral LinkedIn accounts through Unipile, each with its own daily limit and working hours	Not comparedNot compared
WhatsApp	YesMessage campaigns and recorded calls through Unipile	Not comparedNot compared
AI	YesAI columns and a reply-drafting CRM on your own OpenRouter key	YesAI agents for research, list building, outreach and follow-up
Buying signals	PartlyOnly what a provider returns, such as Lusha's job and company changes	YesIntent, job change and website visit signals

“Not compared” means we could not confirm it from Apollo’s own site, so we have not claimed either way.

How AgentSDR works

What you get instead of Apollo

Apollo inside AgentSDR

Use Apollo's data without living in Apollo

Connect your Apollo API key once, then add enrichment columns in a table: find a work email, enrich a person or company, find people at a company by job title. Results become columns you can send to.

15 Apollo actions, with credits spent on your own Apollo account
Test on ten rows before running a table
Rows with a missing required input are skipped and cost nothing

The workflow you own

Sequences and replies on infrastructure you run

Campaigns send from your mailboxes, LinkedIn accounts and WhatsApp numbers inside limits you set. Replies are classified and drafted in one inbox, and every record lives in your database.

One lead record per person across channels
Do Not Contact respected everywhere
Sending rules per organization, not hard-coded

channels from one lead record: email, LinkedIn, WhatsApp: 3
enrichment providers you can connect with your own keys: 15
emails a day per mailbox by default, changeable: 30
per seat, sender or contact from AgentSDR: $0

Being fair

Where Apollo is the better choice

Open source is not the right answer for everyone. If one of these describes you, use the other tool.

You need the data itself
Apollo's database of contacts and companies is its core product. AgentSDR has no database, so without a provider you start from your own lists.
Your reps live on the phone
Apollo offers a Parallel Dialer. AgentSDR places WhatsApp calls only.
You act on buying signals
Apollo surfaces intent, job changes and website visits as signals inside the product.
You want an all-in-one hosted tool
Apollo is one hosted login for data and engagement. AgentSDR needs a deployment and your own accounts for each service.

Why teams switch

Reasons to move from Apollo to AgentSDR

Pay for data, not for seats
Keep an Apollo account for the data, and drop paying per seat for the workflow around it.
Three channels, not one
Add LinkedIn and WhatsApp campaigns to your email, with a shared inbox and AI-drafted replies.
No lock-in on the workflow
Your leads and conversations sit in your database. Swap Apollo for Hunter or Lusha in a column without redoing your sequences.
Audit and extend it
The code is AGPL-3.0, so you can inspect how data is stored and sent.

Getting started

Moving from Apollo

A day of work for a typical list. Nothing here touches your old account until you decide to close it.

01
Create an Apollo API key
Generate it in Apollo, then add it as an account in AgentSDR. The key is verified with a live call and stored encrypted.
02
Import or search
Bring a CSV into a table, or paste rows. Add an Apollo enrichment column to find emails and company data.
03
Create the campaign
Select enriched rows, choose email or LinkedIn and map the columns.
04
Send and review
Launch from your own accounts and work every reply in Action required.

FAQ

Questions, answered

Is there an open-source alternative to Apollo?

AgentSDR is open source under AGPL-3.0 and replaces the outreach and CRM side. It does not replace Apollo's database, so many teams connect Apollo as an enrichment provider.

Can AgentSDR use Apollo data?

Yes. Add your Apollo API key as a provider account and use its 15 actions in enrichment columns, such as Find work email, Enrich person and Find people at company by job title.

Who pays for Apollo credits when I use it in AgentSDR?

You do, on your own Apollo account. AgentSDR does not convert provider credits to money or show a cost per run, so watch usage in Apollo's dashboard and test on ten rows first.

Does AgentSDR have a contact database?

No. It stores the people you import or enrich. For discovery you need a provider such as Apollo, or a list of your own.

Can AgentSDR add contacts to an Apollo sequence?

Yes, as an enrichment action: Add contact to sequence is one of the 15 Apollo actions, alongside Find or create contact and Update contact.

How do I move from Apollo's engagement tools?

Export your contacts as CSV, import them into a table or campaign, connect your mailboxes, and rebuild sequences. Suppress anyone who unsubscribed in Apollo.

Apollo is a trademark of its owner. Comparison based on publicly available information as of October 2026.

Bring Apollo's data, own the workflow

Connect your Apollo key, enrich in tables and send from accounts you own.