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Market around marginalia

A persistent, memory-graph-backed chat agent. Send it a message; it replies with context drawn from its own evolving memory across past sessions. It also keeps projects it researches over time and can fold your contributions into them.

Visit marginalia.polycode.co.uk ↗Pricing page ↗

Explore the market

Prices and medians update for the tier you select.

Compare at
marginalia · Pro
No Pro plan
—
Pro-agent median
$15
across 2 priced agents
vs Pro agents
No comparison
marginalia doesn't sell Pro
ⓘ Comparisons are same provider type (agent) and same buyer tier (Pro). Never across tiers.
Market density
60th pctile
114 strong substitutes
Price momentum · 30d
Flat
Agents · Pro median
$15/mo
2 priced · $14.99–$15 mid 50%
MCP servers · Pro median
$29/mo
7 priced · $17.79–$29.04 mid 50%
Frameworks · Pro median
$24.99/mo
3 priced · $17.49–$137 mid 50%
Other · Pro median
$49/mo
1 priced · $49–$49 mid 50%

Agents cost 0.5× MCP servers at the Pro tier.

Price spectrum · Pro plans · 11 of 15 providers priced · log scale · $9.99 → $249/mo
Agents MCP servers Frameworks Other◻ shaded = middle 50% · line = median (all types)marginalia has no comparable Pro price — not plotted

Products in this market

Ranked by how closely each one matches marginalia's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.

AAgents8Ranked by relevance
marginaliathis listing
● AGENT · relevance 100%
no public price
resonant
● AGENT · relevance 80%
no public price
riverse
● AGENT · relevance 76%
no public price
memoryplugin
● AGENT · relevance 75%
$15/mo Pro
0% vs Pro median
meowagent
● AGENT · relevance 74%
no public price
clopinette
● AGENT · relevance 74%
$14.99/mo Pro
0% vs Pro median
hermes_agent_2
● AGENT · relevance 72%
no public price
momento_ai
● AGENT · relevance 72%
no public price
MMCP servers24Ranked by relevance
neo_mem
● MCP · relevance 79%
no public price
MI
MiFactory
● MCP · relevance 79%
no Pro plan
entry $10/mo
0Latency Memory
● MCP · relevance 78%
$29/mo Pro
0% vs Pro median
brain_mcp
● MCP · relevance 78%
no public price
working_memory
● MCP · relevance 76%
no Pro plan
entry $20/mo
claude_memory_mcp_2
● MCP · relevance 76%
no public price
Synapse Layer (Synapse Protocol)
● MCP · relevance 75%
$19/mo Pro
-34% vs Pro median
hippocampus
● MCP · relevance 75%
no public price
iai_personal_memory_engine
● MCP · relevance 75%
no public price
Hjarni
● MCP · relevance 75%
$11/mo Pro
-62% vs Pro median
lossless_code
● MCP · relevance 74%
no public price
remembra
● MCP · relevance 74%
$49/mo Pro
+69% vs Pro median
mnemoverse_memory_mcp
● MCP · relevance 73%
$29/mo Pro
0% vs Pro median
heimdall_mcp_server
● MCP · relevance 73%
no public price
megamemory
● MCP · relevance 72%
no public price
memcord
● MCP · relevance 72%
no public price
CO
core
● MCP · relevance 72%
no Pro plan
entry $10/mo
agent-sleep
● MCP · relevance 72%
no public price
pūrmemo
● MCP · relevance 71%
no public price
memora
● MCP · relevance 71%
no public price
membro
● MCP · relevance 71%
no public price
memoryos
● MCP · relevance 71%
$16.58/mo Pro
-43% vs Pro median
memorix
● MCP · relevance 71%
no public price
claude_semantic_memory_mcp
● MCP · relevance 71%
no public price
OOther7Ranked by relevance
AI Agent Memory Cognis
● OTHER · relevance 79%
no public price
DSH Self-Improved
● OTHER · relevance 74%
no public price
mentedb
● OTHER · relevance 73%
$49/mo Pro
floop
● OTHER · relevance 72%
no public price
hermes_codex_plugin
● OTHER · relevance 71%
no public price
anytype_mind
● OTHER · relevance 71%
no public price
pi_lcm
● OTHER · relevance 71%
no public price
FFrameworks8Ranked by relevance
memind
● FRAMEWORK · relevance 75%
no public price
nowledge_mem
● FRAMEWORK · relevance 74%
$9.99/mo Pro
-60% vs Pro median
recallium
● FRAMEWORK · relevance 72%
no public price
Mem0
● FRAMEWORK · relevance 72%
$249/mo Pro
+896% vs Pro median
mnemon
● FRAMEWORK · relevance 72%
no public price
clumsies
● FRAMEWORK · relevance 71%
no public price
geniuz
● FRAMEWORK · relevance 71%
no public price
lucid_memory
● FRAMEWORK · relevance 71%
no public price
AAPIs3Ranked by relevance
agent_magnet
● API · relevance 74%
no Pro plan
entry $20/mo
mindset_agent_memory
● API · relevance 72%
no public price
maximem_synap
● API · relevance 71%
no public price

Market = the products most similar to this one by capability; prices are median / quartiles over its priced members, separated by provider type and buyer tier.