Yes, there are several tools similar to Naystack that can help you find candidate contact details and enhance your recruitment process. Here are a few alternatives:

1. LinkedIn Recruiter – A powerful tool for sourcing candidates with extensive filters, allowing you to search for profiles and connect with potential candidates.

2. Hunter.io – This tool helps you find and verify email addresses based on the company domain, which can be useful in reaching out to candidates.

3. ContactOut – A Chrome extension that helps you extract email addresses and phone numbers from LinkedIn profiles.

4. RocketReach – This tool allows you to find email addresses and phone numbers for individuals based on their name and company.

5. ZoomInfo – Primarily used for B2B contact information, but it can also be a valuable resource for finding candidates in specific industries.

6. Siftrock – This tool can help manage and analyze candidate communications within your email.

7. HireEZ – An AI-powered recruitment tool that helps source candidates from various platforms and aggregates their contact information.

When using these tools, ensure that you comply with relevant privacy laws and regulations regarding personal data.