keyword

vpn open source

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

$ curl "https://app.seodata.dev/v1/search-volume?q=vpn-open-source" +--------------+------------------+ | volume | 1,300 | | cpc | $4.13 | | competition | 0.16 | | country | US | | updated | 2026-03-29 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
open source vpn	1,000	$7.39	18/20
vpn server open source	210	$3.19	16/20
free open source vpn	170	$3	16/20
open source vpn server	170	$9.88	16/20
open source vpn free	170	$5.06	15/20
open source vpn client	70	$3.44	16/20
open source vpn clients	70	$0	16/20
open source vpn software	50	$0	18/20
vpn software open source	50	$0	18/20
vpn service open source	30	$9.46	16/20

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=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