
Apollo.io
ZoomInfo
Lusha
Hunter.io
Instantly.ai
Clearbit
Snov.io
lemlist
Bugcrowd
HackerOne
YesWeHack
Acunetix Vulnerability Scanner
Intigriti
HackenProof
Netsparker
Sqlmap
Apollo.io
BugcrowdBugcrowd is especially recommended for businesses and organizations, regardless of size, that are looking to proactively manage their security risks through a sustainable and controlled vulnerability disclosure or bug bounty program. It is also suitable for companies that lack the internal resources to conduct continuous, effective security testing.
We use Apollo with our Sales and BDR team to manage our cold outreach. The strength of the platform is the sequences and cadences that you can set up. Compared to other tools we have used in the past like Salesloft the UI is much easier to navigate. The main limitation is that the quality of data isn't as vast and often I can find prospects on Linkedin but not in Apollo.
Based on our record, Apollo.io should be more popular than Bugcrowd. It has been mentiond 69 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Personal email domains destroy this. Clearbit's Enrichment API returns a null company when it hits gmail.com. Apollo routes personal domains straight to a consumer bucket and skips B2B fields entirely. Even PDL's /person/enrich endpoint โ the most permissive of the major providers โ gives you around 32% hit rate on Gmail addresses versus 74% on corporate domains. I measured this across 6,200 signups for a... - Source: dev.to / 2 months ago
A few things worth flagging: PDL beats Clearbit's historical rates for US and Western European companies, but drops to ~52% match rate for Japan and South Korea specifically. Apollo underperforms on raw company matching but returns significantly more contacts per domain in Prospector-style queries than Clearbit's Prospector ever did โ the tradeoff is more stale titles in the result set. Hunter.io is fast and cheap... - Source: dev.to / 2 months ago
One thing comparison guides consistently get wrong: Clay is not an enrichment API. It's a waterfall orchestration tool that calls People Data Labs, Apollo, Clearbit, and others in sequence for you. It's useful, but it adds 2โ8 seconds of latency per row in my runs and costs more per match than going direct. For a CRM webhook flow where you need sub-second enrichment calls, Clay is the wrong layer to hit first. - Source: dev.to / 3 months ago
Last year I ran the same LinkedIn Sales Navigator export through three enrichment APIs. Apollo matched 61% of the emails. Hunter.io matched 54%. An OSINT-first pipeline I'd built in n8n โ pulling from public sources before hitting any paid API โ matched 79% and cost roughly $0.003 per contact. The delta wasn't magic. It was sequence. - Source: dev.to / 3 months ago
Despite having its LinkedIn Page removed in 2025, Apollo remains a functional enrichment and outreach platform with 275M+ contacts. The free tier includes 10,000 credits and the $49/month basic plan is the cheapest entry point for a combined enrichment-plus-sequencing workflow. Apollo's data collection methods have attracted LinkedIn's attention, but the product continues to operate. The risk I'd assign it:... - Source: dev.to / 3 months ago
I like bugcrowd.com but there are others. Source: about 3 years ago
Depending on what type of cybersecurity you want to do, there's other ways to set yourself apart as well. Another way I'd get confidence in someone's abilities is if they've made bug bounties on bugcrowd.com or hackerone.com, for example. Even then, at big companies those people still have to go through HR just like everybody else. Source: almost 4 years ago
CTFs are the suitable choice in your early phases of learning , just keep an eye on ctftime.org and play some CTFs , if you are confident enough of your skills and disagree with the idea of having a pre-vulnreable software/app then you can do bug bounties on platforms like : Https://Hackerone.com Https://bugcrowd.com. Source: over 4 years ago
Something else that looks great on a resume is bug bounties. There are a number of responsible disclosure websites like HackerOne and BugCrowd where you can find companies willing to either pay or provide thanks for responsibly disclosing security flaws in their products. Look up some tips on bug bounty hunting and if you get lucky you might be able to find something! Source: almost 5 years ago
Hackerone.com and bugcrowd.com but you need hacking skills. Source: about 5 years ago
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
Lusha - Search less. Sell more.
YesWeHack - Global Bug Bounty & Vulnerability Management Platform
Hunter.io - Find all the email addresses related to a domain
Acunetix Vulnerability Scanner - Acunetix Vulnerability Scanner is a platform that offers a web vulnerability scanner and provides security testing to users for their web applications.