keyword

free vpn open source

Monthly search volume and cost-per-click data for "free vpn open source" in US.

$ curl "https://app.seodata.dev/v1/search-volume?q=free-vpn-open-source" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0.09 | | country | US | | updated | 2026-03-29 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
vpn open source	1,300	$4.13	20/20
vpn server open source	210	$3.19	12/20
vpn free open source	170	$5.06	12/20
free open source vpn	170	$3	11/20
open source vpn free	170	$5.06	11/20
open source vpn windows	70	$4.79	13/20
open source vpn clients	70	$0	11/20
site-to-site vpn open source	30	$0	12/20
source vpn	30	$4.62	12/20
vpn source	30	$4.62	12/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/search-volume?q=free-vpn-open-source" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt