
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
12 alternatives to Spanly, matched by what they do.
| Rank | Tool & Tagline | Official Domain | Monthly Visits | MoM Growth | Pricing Model | Primary Market | Rating | Compare |
|---|
| ● | Spanly | spanly.com | 0 | 0 (0%) | Freemium, Paid, Contact for Pricing, Free | Global | — | Profile |
| 1 | Arize AI | arize.com | 249.03K | 7.67K (+3.2%) | Paid, Contact for Pricing | United States | 4.6 | Compare |
| 2 | honeyhive.ai | honeyhive.ai | 8.84K | -9.75K (-52.5%) | Freemium, Contact for Pricing | United States | 4.4 | Compare |
| 3 | Maxim AI | getmaxim.ai | 121.35K | 11.07K (+10%) | Contact for Pricing, Free Open Source | India | 4.3 | Compare |
| 4 | Raindrop | raindrop.ai | 42.81K | -9.63K (-18.4%) | Free Trial, Paid, Contact for Pricing | United States | 4.4 | Compare |
| 5 | Fiddler AI | fiddler.ai | 44.2K | -5.04K (-10.2%) | Contact for Pricing | United States | 4.4 | Compare |
| 6 | PromptLayer | promptlayer.com | 85.9K | -4.18K (-4.6%) | Free Trial, Contact for Pricing | United States | 4.5 | Compare |
| 7 | Future AGI | futureagi.com | 121.74K | -10.26K (-7.8%) | Freemium, Usage-based | India | 4.4 | Compare |
| 8 | Middleware | middleware.io | 35.97K | -5.05K (-12.3%) | Freemium, Contact for Pricing | India | 4.3 | Compare |
| 9 | Confident AI | confident-ai.com | 83.4K | -2.83K (-3.3%) | Freemium, Paid, Contact for Pricing | United States | 4.5 | Compare |
| 10 | Openlayer | openlayer.com | 48.42K | -3.3K (-6.4%) | Freemium, Contact for Pricing | United States | 4.4 | Compare |
| 11 | Weights & Biases (CoreWeave Forge) | wandb.ai | 315.62K | -1.28M (-80.2%) | Freemium, Contact for Pricing, Free | United States | 4.7 | Compare |
| 12 | Anomify | anomify.ai | 1.63K | -2.65K (-62%) | Freemium | Germany | 4.1 | Compare |

Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI

Observe, evaluate and monitor AI agents in production
Observe, evaluate and monitor AI agents in production

Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production

Find and fix problems in your AI agents before users do
Find and fix problems in your AI agents before users do

The control plane for trusted enterprise agents and models
The control plane for trusted enterprise agents and models

The collaboration layer for AI engineering teams
The collaboration layer for AI engineering teams

Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Full-stack observability with an AI SRE agent that fixes issues
Full-stack observability with an AI SRE agent that fixes issues

Standardize LLM evaluation, observability, and red teaming across your whole org
Standardize LLM evaluation, observability, and red teaming across your whole org
AI governance, testing, and observability for regulated enterprises
AI governance, testing, and observability for regulated enterprises

Track, evaluate, and ship AI models and agents in one connected environment.
Track, evaluate, and ship AI models and agents in one connected environment.

Early-warning AI for critical infrastructure monitoring
Early-warning AI for critical infrastructure monitoring