Castelion vs Parsons Corporation
Castelion vs Parsons Corporation, compared side by side on 15 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Castelion is on 61/100 and Parsons Corporation on 10/100.
Where each one leads
Castelion
- our overall score: 61/100 against 10/100
Parsons Corporation
- domain rating: 72/100 against 43/100
At a glance
| Measure | Castelion | Parsons Corporation |
|---|---|---|
| What it is | Defense startup mass-producing affordable hypersonic missile systems for the U.S. military, founded by ex-SpaceX engineers. | Global technology-focused engineering firm providing infrastructure, defense, intelligence, and cybersecurity solutions for government and private sectors. |
| Category | Defense, Hypersonic, Missiles, Aerospace | Defense, Infrastructure, Cybersecurity, Intelligence |
| Sells toBusiness model | B2G | B2B2G |
| Offering | Hardware | Services |
| Founded | 2022 | 1944 |
| Headquarters | El Segundo, United States | Chantilly, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Castelion | Parsons Corporation |
|---|---|---|
| Employees | 100 | Not published |
| Total funding | $1.1B | Not published |
| Latest round | Series C | Not published |
| Valuation | $13B | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Castelion | Parsons Corporation |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 61/100 | 10/100 |
| Traction | 60/100 | Not published |
| Team | 10/100 | 30/100 |
| Search visibility | 39/100 | 11/100 |
| Quality | 78/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | F (39/100) | D (42/100) |
| Domain ratingLink authority, 0-100 | 43/100 | 72/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Castelion | Parsons Corporation |
|---|---|---|
| CDN | Cloudflare | Cloudflare |
| CMS | WordPress | WordPress |
| Frameworks | Jquery, Bootstrap | Jquery, Bootstrap |
| Analytics | Google Tag Manager | Not detected |
| Support stack | Not detected | HubSpot |
What users say
| Measure | Castelion | Parsons Corporation |
|---|---|---|
| Reddit sentimentThreads we track | 1 positive, 3 negative across 6 threads | Not published |
“Hypersonic weapon startup Castelion wins $105 million Navy contract for F/A-18 integration. Castelion, a small California defense startup, has won a $105 million U.S. Navy contract to ready its Blackbeard hypersonic missile for use aboard ”r/FighterJets
Castelion vs Parsons Corporation: common questions
Which is better, Castelion or Parsons Corporation?
On our 0-100 score Castelion rates higher (61/100 against 10/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 15 data points above: read the rows that match what you are buying for.
How do Castelion and Parsons Corporation compare on the numbers?
Castelion leads on our overall score (61/100 against 10/100). Parsons Corporation leads on domain rating (72/100 against 43/100).
What do real users say about Castelion and Parsons Corporation?
Castelion: 1 positive and 3 negative mentions across 6 Reddit threads we track, mostly in r/FighterJets.
Read the full Castelion review and pricing or the Parsons Corporation review and pricing. You can also browse other Castelion alternatives we track.